Retrieve from mib variable list is blank

Hello All,

I want to monitoring DELL servers by HP SIM 7.2 (I applied the following tutorial : (http://www.dell.com/downloads/global/solutions/Integrating_PowerEdge_Servers_into_HPSIM50.pdf)

I imported, compiled and registered MIBs files successfully, but when i want to creat a new rule system type the 'Mib variable name' list is blank (see attachment)

Any ideas.

Thanks in advence