how to change a variable value in the middle of simulation in simulink

I am giving pulse to a mosfet through pulse generator and i want to vary the pulse witdth to another value after 2 sec. How can i do it in simulink

[Birdman]

As far as I know, it is already doable from the mask of it. What is your situation so that you are not able to change it? Can you share your model as a file?

[kesava rao]

Thank u for responding

here in pulse generator i assigned P=80 in call back -int function

after 1 sec i want to change it to p=30 ...can you show a way to change

Answer 1

[Birdman]

Try the attached model. Copy the structure and replace it with the pulse generation block. It should work. Instead of writing p inside the constant block, just write the numerical value, 80 or 30.

[kesava rao]

Thank you for trying to solve

But Your new block didnt solve my problem

i want to change my pulse width to 30 from 80 to apply forward breaking after 1 sec

suggest some other method

[Birdman]

Try the attached model. It does what you need.