diff --git a/CHANGELOG.md b/CHANGELOG.md
index 724738f..b319dee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## Unreleased
+
+### Fixed
+
+- Fix visibility conditions on tree cascade dropdown questions
+
 ## [1.1.1] - 2026-05-27
 
 ### Fixed
diff --git a/public/js/modules/AfTreeCascadeDropdown.js b/public/js/modules/AfTreeCascadeDropdown.js
index 543b0d3..42cb732 100644
--- a/public/js/modules/AfTreeCascadeDropdown.js
+++ b/public/js/modules/AfTreeCascadeDropdown.js
@@ -84,7 +84,7 @@ export class AfTreeCascadeDropdown {
             const value = $select.val();
             const fieldName = $select.data('af-tree-field-name');
             if (fieldName) {
-                 $(`input[name="${fieldName}"]`).val(value);
+                $(`input[name="${fieldName}"]`).val(value).trigger('input');
             }
 
             const $wrapper = $select.closest('.af-tree-level-wrapper');
diff --git a/src/Model/ConditionHandler/TreeCascadeItemAsTextConditionHandler.php b/src/Model/ConditionHandler/TreeCascadeItemAsTextConditionHandler.php
new file mode 100644
index 0000000..4b70aca
--- /dev/null
+++ b/src/Model/ConditionHandler/TreeCascadeItemAsTextConditionHandler.php
@@ -0,0 +1,118 @@
+<?php
+
+/**
+ * -------------------------------------------------------------------------
+ * advancedforms plugin for GLPI
+ * -------------------------------------------------------------------------
+ *
+ * MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ * -------------------------------------------------------------------------
+ * @copyright Copyright (C) 2025 by the advancedforms plugin team.
+ * @license   MIT https://opensource.org/licenses/mit-license.php
+ * @link      https://github.com/pluginsGLPI/advancedforms
+ * -------------------------------------------------------------------------
+ */
+
+namespace GlpiPlugin\Advancedforms\Model\ConditionHandler;
+
+use CommonDBTM;
+use CommonTreeDropdown;
+use Glpi\Form\Condition\ConditionData;
+use Glpi\Form\Condition\ConditionHandler\ConditionHandlerInterface;
+use Glpi\Form\Condition\ValueOperator;
+use Override;
+
+/**
+ * Like ItemAsTextConditionHandler but uses completename for CommonTreeDropdown
+ * items so that conditions on parent nodes work correctly.
+ *
+ * Core's ItemAsTextConditionHandler uses getName() which returns only the
+ * item's own name. For tree dropdowns, a child's own name does not include
+ * its ancestors, so "contains <parent name>" always fails. Using completename
+ * (e.g. "Parent > Child") makes the full path available for matching.
+ */
+final readonly class TreeCascadeItemAsTextConditionHandler implements ConditionHandlerInterface
+{
+    public function __construct(
+        private string $itemtype,
+    ) {}
+
+    #[Override]
+    public function getSupportedValueOperators(): array
+    {
+        return [
+            ValueOperator::CONTAINS,
+            ValueOperator::NOT_CONTAINS,
+        ];
+    }
+
+    #[Override]
+    public function getTemplate(): string
+    {
+        return '/pages/admin/form/condition_handler_templates/input.html.twig';
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    #[Override]
+    public function getTemplateParameters(ConditionData $condition): array
+    {
+        return [];
+    }
+
+    #[Override]
+    public function applyValueOperator(
+        mixed $a,
+        ValueOperator $operator,
+        mixed $b,
+    ): bool {
+        if (!is_array($a) || !isset($a['items_id'])) {
+            return false;
+        }
+
+        $item = $this->itemtype::getById($a['items_id']);
+        if (!$item) {
+            return false;
+        }
+
+        // Use completename for tree dropdowns so that conditions referencing
+        // ancestor nodes match correctly (e.g. "contains Parent" matches a child
+        // whose completename is "Parent > Child").
+        /** @var CommonDBTM $item */
+        if ($item instanceof CommonTreeDropdown) {
+            $completename = $item->fields['completename'];
+            $text = is_string($completename) ? $completename : '';
+        } else {
+            $text = $item->getName();
+        }
+
+        $a = strtolower($text);
+
+        $b = is_scalar($b) || $b === null ? strtolower((string) $b) : '';
+
+        return match ($operator) {
+            ValueOperator::CONTAINS     => str_contains($a, $b),
+            ValueOperator::NOT_CONTAINS => !str_contains($a, $b),
+            default                     => false,
+        };
+    }
+}
diff --git a/src/Model/QuestionType/TreeCascadeDropdownQuestion.php b/src/Model/QuestionType/TreeCascadeDropdownQuestion.php
index f55f41a..2977156 100644
--- a/src/Model/QuestionType/TreeCascadeDropdownQuestion.php
+++ b/src/Model/QuestionType/TreeCascadeDropdownQuestion.php
@@ -36,11 +36,16 @@
 use DBmysql;
 use CommonTreeDropdown;
 use Glpi\Application\View\TemplateRenderer;
+use Glpi\DBAL\JsonFieldInterface;
+use Glpi\Form\Condition\ConditionHandler\ItemAsTextConditionHandler;
 use Glpi\Form\Question;
 use Glpi\Form\QuestionType\QuestionTypeCategoryInterface;
 use Glpi\Form\QuestionType\QuestionTypeItemDropdown;
+use Glpi\Form\QuestionType\QuestionTypeItemExtraDataConfig;
+use GlpiPlugin\Advancedforms\Model\ConditionHandler\TreeCascadeItemAsTextConditionHandler;
 use GlpiPlugin\Advancedforms\Model\Config\ConfigurableItemInterface;
 use GlpiPlugin\Advancedforms\Model\QuestionType\AdvancedCategory;
+use InvalidArgumentException;
 use Override;
 
 final class TreeCascadeDropdownQuestion extends QuestionTypeItemDropdown implements ConfigurableItemInterface
@@ -404,6 +409,29 @@ private function getValidItemsForLevel(string $table, array $base_where, array $
         return $items;
     }
 
+    #[Override]
+    public function getConditionHandlers(?JsonFieldInterface $question_config): array
+    {
+        if (!$question_config instanceof QuestionTypeItemExtraDataConfig) {
+            throw new InvalidArgumentException();
+        }
+
+        $handlers = parent::getConditionHandlers($question_config);
+
+        // Replace ItemAsTextConditionHandler with the tree-aware variant that
+        // uses completename so conditions on ancestor nodes match correctly.
+        $handlers = array_filter(
+            $handlers,
+            fn($handler) => !($handler instanceof ItemAsTextConditionHandler),
+        );
+
+        if ($question_config->getItemtype()) {
+            $handlers[] = new TreeCascadeItemAsTextConditionHandler($question_config->getItemtype());
+        }
+
+        return array_values($handlers);
+    }
+
     #[Override]
     public function prepareEndUserAnswer(Question $question, mixed $answer): mixed
     {
diff --git a/tests/Model/ConditionHandler/TreeCascadeItemAsTextConditionHandlerTest.php b/tests/Model/ConditionHandler/TreeCascadeItemAsTextConditionHandlerTest.php
new file mode 100644
index 0000000..90c794a
--- /dev/null
+++ b/tests/Model/ConditionHandler/TreeCascadeItemAsTextConditionHandlerTest.php
@@ -0,0 +1,187 @@
+<?php
+
+/**
+ * -------------------------------------------------------------------------
+ * advancedforms plugin for GLPI
+ * -------------------------------------------------------------------------
+ *
+ * MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ * -------------------------------------------------------------------------
+ * @copyright Copyright (C) 2025 by the advancedforms plugin team.
+ * @license   MIT https://opensource.org/licenses/mit-license.php
+ * @link      https://github.com/pluginsGLPI/advancedforms
+ * -------------------------------------------------------------------------
+ */
+
+namespace GlpiPlugin\Advancedforms\Tests\Model\ConditionHandler;
+
+use Glpi\Form\Condition\Engine;
+use Glpi\Form\Condition\EngineInput;
+use Glpi\Form\Condition\LogicOperator;
+use Glpi\Form\Condition\Type;
+use Glpi\Form\Condition\ValueOperator;
+use Glpi\Form\Condition\VisibilityStrategy;
+use Glpi\Form\QuestionType\QuestionTypeItemDropdownExtraDataConfig;
+use Glpi\Form\QuestionType\QuestionTypeShortText;
+use Glpi\Tests\FormBuilder;
+use GlpiPlugin\Advancedforms\Model\QuestionType\TreeCascadeDropdownQuestion;
+use GlpiPlugin\Advancedforms\Tests\AdvancedFormsTestCase;
+use Location;
+use Session;
+
+/**
+ * Tests that the CONTAINS/NOT_CONTAINS condition operators on a TreeCascadeDropdown
+ * question match against the item's full completename (hierarchical path) rather
+ * than just its own name.
+ *
+ * Regression: selecting a child item only matched conditions against its own
+ * name, so conditions referencing an ancestor were always false.
+ */
+final class TreeCascadeItemAsTextConditionHandlerTest extends AdvancedFormsTestCase
+{
+    /**
+     * Verify that CONTAINS evaluates to true when the searched text appears in
+     * the completename of the selected item but not in its own name alone.
+     */
+    public function testContainsMatchesCompletename(): void
+    {
+        $this->login();
+        $this->enableConfigurableItem(TreeCascadeDropdownQuestion::class);
+
+        $entity_id = Session::getActiveEntity();
+
+        $parent = $this->createItem(Location::class, [
+            'name'         => 'Parent Location',
+            'locations_id' => 0,
+            'entities_id'  => $entity_id,
+        ]);
+
+        $child = $this->createItem(Location::class, [
+            'name'         => 'Child Location',
+            'locations_id' => $parent->getID(),
+            'entities_id'  => $entity_id,
+        ]);
+
+        $extra_data = json_encode(new QuestionTypeItemDropdownExtraDataConfig(
+            itemtype: Location::class,
+        ));
+
+        $form_builder = new FormBuilder("Test form");
+        $form_builder->addQuestion(
+            name: "My location",
+            type: TreeCascadeDropdownQuestion::class,
+            extra_data: $extra_data,
+        );
+        $form_builder->addQuestion("Dependent question", QuestionTypeShortText::class);
+        $form_builder->setQuestionVisibility("Dependent question", VisibilityStrategy::VISIBLE_IF, [
+            [
+                'logic_operator' => LogicOperator::AND,
+                'item_name'      => "My location",
+                'item_type'      => Type::QUESTION,
+                'value_operator' => ValueOperator::CONTAINS,
+                'value'          => 'Parent Location',
+            ],
+        ]);
+
+        $form = $this->createForm($form_builder);
+
+        $answers = [
+            $this->getQuestionId($form, "My location") => [
+                'itemtype' => Location::class,
+                'items_id' => $child->getID(),
+            ],
+        ];
+
+        $engine = new Engine($form, new EngineInput($answers));
+        $output = $engine->computeVisibility();
+
+        $dependent_id = $this->getQuestionId($form, "Dependent question");
+        $this->assertTrue(
+            $output->isQuestionVisible($dependent_id),
+            "Condition 'contains Parent Location' should match a child item "
+            . "whose completename is 'Parent Location > Child Location'",
+        );
+    }
+
+    /**
+     * Verify that NOT_CONTAINS evaluates to false when the searched text appears
+     * in the completename of the selected item (via an ancestor).
+     */
+    public function testNotContainsMatchesCompletename(): void
+    {
+        $this->login();
+        $this->enableConfigurableItem(TreeCascadeDropdownQuestion::class);
+
+        $entity_id = Session::getActiveEntity();
+
+        $parent = $this->createItem(Location::class, [
+            'name'         => 'Parent Location',
+            'locations_id' => 0,
+            'entities_id'  => $entity_id,
+        ]);
+
+        $child = $this->createItem(Location::class, [
+            'name'         => 'Child Location',
+            'locations_id' => $parent->getID(),
+            'entities_id'  => $entity_id,
+        ]);
+
+        $extra_data = json_encode(new QuestionTypeItemDropdownExtraDataConfig(
+            itemtype: Location::class,
+        ));
+
+        $form_builder = new FormBuilder("Test form not contains");
+        $form_builder->addQuestion(
+            name: "My location",
+            type: TreeCascadeDropdownQuestion::class,
+            extra_data: $extra_data,
+        );
+        $form_builder->addQuestion("Dependent question", QuestionTypeShortText::class);
+        $form_builder->setQuestionVisibility("Dependent question", VisibilityStrategy::VISIBLE_IF, [
+            [
+                'logic_operator' => LogicOperator::AND,
+                'item_name'      => "My location",
+                'item_type'      => Type::QUESTION,
+                'value_operator' => ValueOperator::NOT_CONTAINS,
+                'value'          => 'Parent Location',
+            ],
+        ]);
+
+        $form = $this->createForm($form_builder);
+
+        $answers = [
+            $this->getQuestionId($form, "My location") => [
+                'itemtype' => Location::class,
+                'items_id' => $child->getID(),
+            ],
+        ];
+
+        $engine = new Engine($form, new EngineInput($answers));
+        $output = $engine->computeVisibility();
+
+        $dependent_id = $this->getQuestionId($form, "Dependent question");
+        $this->assertFalse(
+            $output->isQuestionVisible($dependent_id),
+            "Condition 'not contains Parent Location' should NOT match a child item "
+            . "whose completename is 'Parent Location > Child Location'",
+        );
+    }
+}