Sending Userdata in dhtmlxcombo XML

Hi Team,

I am using DhtmlxCombo and I need some more data on client side. I am using XML for populating my dhtmlxcombo but now I don’t know how to send more data in the XML like we do it in grid.
I am stuck here, can you please let me know as soon as possible.

Thank You,

Can i specify what type of data you need to send?
What exactly ‘like we do it in grid’? Userdata?