This will not work, and will print 5,5 regardless which checkbutton you click. The issue is that you used the latest value of $x and $y, not the value at the time when the checkbutton is defined.

In reply to Re^2: Perl/Tk : Trouble with commands and Checkbuttons by pg
in thread Perl/Tk : Trouble with commands and Checkbuttons by Petras

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