why any function as m file, does not work on my pc?

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.

Answer 1

[Walter Roberson]

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);

[saeede soleymani]

Dear Mr Roberson, thanks so much for your replying. as yet, all of my questions in mathworks site answered by you. thank you

Answer 2

[Ilham Hardy]

And did you call that with two arguments?

new_state(2,3)

[saeede soleymani]

thanks a lot, yes,it works with this. but I want call it from the main function with variables that defined in workspace from simulink

[Ilham Hardy]

Say you have variable a and b in the base workspace, then you can call

y = new_state(a,b);

If you want to call the new_state from within the function, you do not have direct access to the base workspace.

Perhaps it will best for you to open new question thread and better formulate your question (with more examples)?