I have a object SystemUser composed of 2 User objects
My user object is composed of a name and a first name

Consider the following schema :

SystemUser
- User user
- - Name
- - FirstName
- User userManager
- - Name
- - FirstName


I want to display Both SystemUser's users' names inside the WebCombo control.
In fact I want user.Name in one column and userManager.Name in a second column


I created a webcombo on an ASPX form.
I set as a datasource a List<SystemUser>
I created two columns via Edit Data Structure window

Column 1 : Key "username" baseColumnName = "user.Name"
Column 2 : Key "usermanagername" baseColumnName = "userManager.Name"


but this doesn't work.
How can I display two differents strings that are on the same base object but located in different child objects ?

If I put two string properties, this is working but I can't keep the property in my parent object, so i need the webcombo control to be able to retrieve info directly from the complex data type hosted as a child object in my SystemUser object !

Please advice!