Comsol 3.5a: Simulating Superconductivity with respect to time.

Greetings,

I'm a newbie in Comsol using 3.5a. I am trying to model how superconductivity changes in time. I have the proper constants, scaler expressions, and subdomain expressions that I need. I have the period set to 10 and a constant that changes with time. I define the time to be 10 seconds. When I run the simulation I display the proper field, and when I view the cross section at some point in space I get a graph that I'm looking for.

Here is the problem, when I want to extend the time to 120 seconds does that mean that I must change the period as well or can I manually change the value in the constant function. WHen I change it under the constant the cross section still gives me the the same graph as before. Changing the period still displays 10 seconds in the graph. Is there anyway I can extend the x-axis domain to larger value?

Need help,

THanks for your time!