Link two models PDE and Thermal Stress

Hi there,
I am new in COMSOL, using the version 4.4.
I am using two model. One is "coefficient of PDE(c)" and other is "thermal stress model". Both are time dependent. The variables I am getting from PDE are two temperatures.
I know, if I use thermal stress model I have to use a heat source. But want I don't want that, instead I want one of the temperature that i am getting form PDE model will reflect on Stress model. And the temperature from PDE model is the reason for the thermal stress.
I will be really grateful to you if you give me a solution for that..


Thanks a lot
Pinaki