Comsol - dependent variables in Global equation
 

Hi all,

I have a simple question. I am solving a PDE with Comsol and I have a source term which is a function of the PDE's dependent variable.

So I used "global equation" in Comsol, but the PDE's variable is not recognized there. I get this error (phi is the PDE variable):

Failed to evaluate variable Jacobian.
- Variable: phi
- Global scope:
- Feature: Time-Dependent Solver 1 (sol1/t1)

How can I fix that?

Thanks!