RAM DA API - Concrete Members

Hi,

I am trying to create a short VBA Script to use the RAM DA for writing the list of "lSectionID" for concrete beams into an excel sheet. 

I created the identical model with steel members to check my script and it works fine for steel beams, however for the concrete model it doesn't work. 

Is there any reason why:

IBeam.lSectionID

IBeam.lUID

IBeam.lLabel

IBeam.lMaterialID

...

don't work for the concrete beams but work for steel beam?

Thanks,

Raji