pass variable from a GUI to another

Hi... how do i pass variable from one gui another gui? I am doing a vending machine controller. On my GUI screen i'll have items buttons and insert money button. When i click on insert money button, and GUI pops out. To make another GUI pop out when i click the insert money, i simply put the another GUI's file name at the buttons callback. In another GUI will have 3 choices of amount as the money inserted by user " 1$ 5$ 10"$, how do i pass this variable from the Sub gui to the main gui???

Answer 1

[Matt Fig]

See the answer to question #26: http://www.mathworks.com/matlabcentral/fileexchange/24861-41-complete-gui-examples