run m-File script with a pushbutton, then use the read elements with another button

Hi folks!

I want to make a gui which on the push of one button reads the data from the script of my check2.m (it contains xlsreads an such) file.

Another button should then be able to use the read data and just write a message box with the information contained.

Here my code:

*function pushbutton1_Callback(hObject, eventdata, handles)

evalin('base', 'check2')*

it reads the script and writes the data to the workspace just fine. further the element i should be written to a msgbox.

function pushbutton2_Callback(hObject, eventdata, handles)

msgbox(i);

This however doesn't work at all, providing me with a huge error message.

Help please and hi from Munich