Creating an matrix with values from a different m-file

Hi, I'm super new to this, so bare with me. So far I have assigned number values to push buttons that are related to a variables - for example:

function checkbox3_Callback(hObject, eventdata, handles)
if (get(hObject, 'value') == get(hObject, 'max'))
    B1 = 1
end

I want to put these values into a matrix so that they can be scored, but scoring will be done in a different m-file. How do I import my values so that they can be put into a matrix in a different m-file?