If you use the Script Helper Tool to setup the experiment automatically more than once, with the same name, it will overwrite any previously created and edited files.
I suggest adding a function to check if these files already exist and to provide a popup of some kind asking the user to confirm if they want to overwrite the existing files.
Confirming would recreate/overwrite the files experiment files.
Canceling would keep the user at the Script Helper window without overwriting any files. The user could then change the experiment name and then create/setup the desired files.