Thx everybody,

you are right samtheman, you are late lol!!

Actually I solved my problem with a GPO under computer configuration.

The problem was that I tried to change permission on a folder located under "Program files" but every "standard user" cant modify those folders. I created a GPO that change permission but under "users configurations" and the GPO runs with local permissions...

By running the GPO under "computer configuration" I by pass that, and problem solve!!

Thx all again!