ZENworks variables - ${UserProfile} - Bug?

Hi, I'm getting errors when I try to use ZENworks and/or Windows system variables. For example, I created a bundle that deploys a file in the "Documents" folder of the user who just log in. So I use the ZENworks variable ${UserProfile} since I read somewhere in this forum that ZENworks was having problem with the Windows system variables. But now it seems that the ZENworks variables also don’t work correctly. So are we the only one that has these problems? Is there some kind of mater list of the ZENworks variables and/or Windows variables? By the way the bundle is configure to launch at the user login and we run 11.2.2 MU1. Also the clients run Windows 7 x64 Ent.

Thanks in advance for the help!
Guillaume