Smarty Code in Product Pages

Hey guys, I use the same form for the ‘buy now’ action in several places in my site. So I went ahead and put it in a form and put the form in a hook. That works great for several parts of my site. However, I want to put a hook on the individual product detail pages. I tried to do this through the editor through csc admin. It looks to me like you cannot put any smarty code into this. Is that the case?