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chern4ever 0 Light Poster

how do i edit the existing data in a txt files?
example of text file
"string1","string2","int3"

string3 is an integer, i wan to edit it everytime i click a command button
numppl is selected by user
i wan the new int3 to be
old int3 + numppl
can sum1 help me please? thank you

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