[xwiki-devs] property "List of users"

Hi All! I am trying to solve next task: I need to compare login of current user (current session login) and login of user which is stored in the object, which is added to the page. To get first value i use next function: xwiki.getUserName(xcontext.getUser(), false) it is working good! to store second value i have created object ( which is linked to page) and added property "List of users" into it. I can input username into this object, but i cannot get back it. i try to get it via ${xwiki.getUserName(MyObject.display("ApproverList", "view"), true) but it doesn't work ( it returns link to the user profile image) i have tried other but they don't work too. Can somebody help me and explain, how to get user name from this object?