Insert page in Virtuemart category [SOLVED]

Hi,
I'm trying to insert an existing page into a category description in virtumart.
I probably miss something but the result is only the tag is visible, the page is not loaded.
I had a look to Virtuemart to check if it was something like "script are not allowed" but i can't find anyhting. Any idea?
Thanks!

Ok, i just to have to ask to find the answer directly : Virtuemart->Configuration -> Enable Joomla Plugin