handle_to_part2 = part2();
handles_part2 = guidata(handle_to_part2);
for n=1:100
var=n*10;
set(handles_part2.text1, 'String', num2str(var) );
drawnow;
end
Change the "text1" to the name of the tag inside part2.fig
The first line,
handle_to_part2 = part2();
is executing part2() so that part2 will tell you its figure number. The handles structure for a GUIDE-created GUI are attached to the particular figure, not to some kind of "project", so you need to find out which figure it is to retrieve the handles structure
