Hi all

I already asked this to the french community but I ain't any answer yet...
I'm building up a website (with ModX Evolution 1.0.6) that displays some lists of items - there are actually 4 or 5 different categories of items.
Before loggin in, the page only displays a picture of my items.
Once I logged in (using webLoginPE), I'd like more content to be displayed (such as price, or anything else).
I looked for a Ditto parameter that makes a difference between a logged in user, and a non-logged in one, so that I could use two different chunks to display the items. I didn't find it : I guess it simply doesn't exist ?
There must be a snippet to help me do what i'd like to do, right ?
I guess it's not so hard, but I'm not keen in PHP... (yet ;-) ). Please, could someone help me out ? Thank u sooo much !