Open multiple Matlab instances passing values

Hi there,

I want to open, say, 20 Matlab instances by running one .m file.

How do I pass changing values to a newly opened instance? I'll try to give a very simple example in order to demonstrate the functionality I'm looking for.

Let's assume every new instance runs a function a_plus_b(b). It doesn't have to return values, because it will write them somewhere.

The content of function a_plus_b(b) is just:

a=1; c = a + b;

b changes for every instance that opens the function a_plus_b(b). How do I pass the changing value for b to every new instance opening the function?

Thanks in advance for any hint, Simon