run m file triggered by simulink but outside simulink

I want to run m file which is triggered by simulink model-1 output (triggered by constant=1), but i want it to run outside of simulink model-1. The m file will execute an import function from excel and transfer to workspace then simulink model-2 will be executed after worspace is generated. I've been trying to use Matlab custom function block but it gives me error , so i just want a trigger to run m file normally without using Interpreted Matlab function.