MATLAB: Why any function as m file, does not work on the pc

errorfunctionfunctionsnot enough input arguments

I have MATLAB2014a 32bit on my pc with windows8 64bit. I wrote an m file (function), but it didn't work and had error. after, I write a so easy m file, and has error!!!!! what should I do?
function y=new_state(x,v)
y=x+v
end
error is
    Error using new_state (line 2)
    Not enough input arguments.

Best Answer

If you run Simulink from the GUI menu, then variables for To Workspace blocks go in to the base workspace.
If you run Simulink by using the sim() command, then variables for To Workspace blocks go in to the workspace of the function that you call sim() in.
If you need to pull a variable out of the base workspace you can do that using evalin()
a = evalin('base', 'a');
b = evalin('base', 'b');
new_state(a, b);
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