Setting the end time in Simulink through an m-file; Online help seems to be wrong and unhelpful

I am using commands like the following:

set_param('practicesimmodel','StartTime','0','StopTime','20');

sim('practicesimmodel');

However, MATLAB is totally ignoring what I set as the StoptTime and continues using what has been placed in the simulink model window. How do I automate this so I can change the stoptime from within an mfile?

thanks

Answer 1

[Fangjun Jiang]

Open the model, run the first line and check the model, you will see the 'StopTime' is changed.

The problem is with the second line. Give it a return variable like out=sim('practicesimmodel') and check the result.

This is really the problem with the Mathworks.

[John Anthony Rossiter]

thanks. This seems to work but is totally bizarre and not an obvious debug result. Why doesnt mathworks make this more obvious in the help or fix it?

Anthony

[Fangjun Jiang]

I have no idea. I've raised this before. Any Mathworkers watching???