why not use a while loop like: 
my $x = 'FALSE';

while ( $x ) {
    $x = 'TRUE';
    last if( $x =~ /TRUE/ );
}

print 'Script is now outside of while loop and $x is TRUE';

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But without seeing more code in which this question was derived from, I am not certain this will be what you need. You may not need a while loop.

In reply to Re: use of last by james28909
in thread use of last by morgon

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