handles.tab not define in other GUI files

Hi everyone,

I have a GUI where I display a table:

set(handles.tableauData, 'Data', tab);figure(gcf)
tab is define as global variable.

In another GUI files , I change somes values of my table tab. I would like to re-set the table which is display in the other GUI when in click on the button, so in the callback of my button I do:

set(handles.tableauData, 'Data', tab);figure(gcf)
But matlab says that handles.tableauData is unknow in my file file GUI, how can I do?

Thank you for your help