I have a usermat.f subroutine and a usermatth.f subroutine.

In APDL, they work well individually, now I want to couple structural analysis and thermal analysis, but I don't know how.

I have tried to use UPFs in Workbench, but I still can't figure it out.

Is it able to use two subroutines in APDL or in Workbench?