put the my $this-variable statement somewhere outside the loop or subroutine where you want other parts to get info from it.

my $myvariable;
my $this-variable;
$this-variable = 1 if $myvariable =~ /blah/;
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then later on in the code you can do this

print "HEY!\n" if $this-variable;
print "NO!\n" if !$this-variable;
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