Some Help Would Be More Than Appreciated-Tempereture Changing Dynamically

I'm trying to model a pv array using matlabs solar cell block and i cant change the temperature parameter dynamically. How can i do that in matlab or simulink? For example i want the temperature to be 25 degrees C then 50C then 30C...

[Walter Roberson]

Duplicate is at http://www.mathworks.com/matlabcentral/answers/21651-how-can-i-change-the-temperature-variable-of-a-solar-cell-dynamically