How to delete a file in AppData Folder

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Hi Forum, I tried some methods but no results here.
I need to delete the following file:

C:\Users\GenericUserName\AppData\Roaming\MyFile.txt

This path is on Win 7 and later, obviously I need it works on Win XP too.

Please help me with this enviromental variable.

THANKS TO ALL!

Hi:
Are you using setup factory or Ams 8?

I use AMS8, on the IR Forum I found a lot of solution but only for SF9.

Try this script:
File.Delete(Shell.GetFolder(SHF_APPLICATIONDATA).."\\MyFile.txt");

It's PERFECT!
Thank you so much man.

gracias