Settings.Default not saving

I have two integers, primary and secondary, that i want to persist, but they refuse to

when i print settings.default.secondaryoutput on application exit, it is right

but when i reopen the program its reverted back to 0

my string setting saves, but the integers dont

but its set up the same way

apparently when you assign a datasource to a combobox, it calls selectedindexchanged

which was messing with my code

solved