diff --git a/FFXIVClientStructs/FFXIV/Client/Game/Object/EventObject.cs b/FFXIVClientStructs/FFXIV/Client/Game/Object/EventObject.cs
index 1969571ad..cd6df182f 100644
--- a/FFXIVClientStructs/FFXIV/Client/Game/Object/EventObject.cs
+++ b/FFXIVClientStructs/FFXIV/Client/Game/Object/EventObject.cs
@@ -8,7 +8,16 @@ namespace FFXIVClientStructs.FFXIV.Client.Game.Object;
 public partial struct EventObject {
     [FieldOffset(0x1A0), CExporterExcel("EObj")] public nint EObjRowPtr;
     [FieldOffset(0x1A8), CExporterExcel("ExportedSG")] public nint ExportedSGRowPtr;
+    [FieldOffset(0x1B2)] public ushort SharedTimelineState; // ActorControl category 0x199 (SetSharedTimelineState) sets this field
+    [FieldOffset(0x1B8)] public byte Flags;
 
+    /// <summary> Plays or switches an EObj animation/effect slot. </summary>
+    /// <param name="sharedTimelineState"> Similar to MapEffect's a2. Does not appear to affect the actual visible animation directly. </param>
+    /// <param name="bitMask"> Similar to MapEffect's a3. Each bit represents one animation (e.g. show, fadeout). Appears to use only single-bit values. </param>
+    /// <remarks>
+    /// EObjAnimation is highly similar to MapEffect; MapEffect appears to be a wrapped form of this mechanism.
+    /// Different scene-bound resources attached to an EObj are roughly equivalent to MapEffect's a1.
+    /// </remarks>
     [MemberFunction("E8 ?? ?? ?? ?? E9 ?? ?? ?? ?? 4D 85 F6 0F 84 ?? ?? ?? ?? 8B 44 24 70 BE ?? ?? ?? ??")]
-    public partial void PlayAnimation(uint entityId, uint actionId, ulong unknown);
+    public partial void PlayAnimation(ushort sharedTimelineState, ushort bitMask, ulong context = 0);
 }