how to use PreLoadFcn

I have a model which was designed in MATLAB2014a and I have used the preload function to set my parameters. it used to work perfect, until I installed MATLAB2014b and now everytime I open my model, I get an error which says "Undefined variable "myparam" or class "myparam.m" " , myparam.m is an mfile including my parameters. how can I stop getting this error and make it work?

Answer 1

[Sean de Wolski]

You'll need to add the directory containing my_param.m to the MATLAB path so MATLAB and SIMULINK can see it:

[Sahar]

thanks for your answer, but it already is in the same folder that I have all my codes and simulink models.

[Sean de Wolski]

That does not necessarily mean that folder is on the path. You could be able to run things in that folder if it was the current one, but not when navigating away from it.

[Sahar]

but there is no option to add it to the path, the only thing I see when right-clicking, is "indicate files Not on path" .