Change Pop up menu choices when GUI is started

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I have a cell called sheetNamesOECF containing strings, this cell is updated in the main mfile, When I run the gui for the first time, the pop up menu will show the strings that are in the sheetNamesOECF cell. Now when I run the main mfile again with different parameters, the sheetNamesOECF cell will have different strings. But when I run the gui the old strings are still in the pop up menu. Is there a way to change to pop up menu strings on GUI start?
Kind regards,
Thomas koelen

Accepted Answer

Thomas Koelen
Thomas Koelen on 8 Apr 2015
set(handles.popupmenu1, 'String', sheetNamesOECF);
in your OpeningFcn.

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