[itsm] add Column to Overview of CI

Hi! I would like to add a column to the overview of CI's. How can I read out the XML Content when i got the ConfigItems ID and the lastversion? It don't have to be dynamic. I figured out that i have to change AgentITSM AgentITSMConfigItemSearch to change the search. But how can I get the values of my own defined Attributes? Thanks Tan