Heat transfer problem with glue connection (RBE3)

Hi 

I am performing a heat transfer simulation (steady state).

The model consists of 2 plates joined together by a glue connector. One plate is heated up, the other one is at the ambient temperature.

The problem I have is that when I look at the result, the RBE3 elements seem to act as insulators (see image below), the bottom surface is hooter that the upper surface, the blue region is the glue. I know it is possible to specify a thermal expansion coefficient for these elements but is it possible to specify a thermal conductivity value as well?

Looking forward to your replies

Toon