Maybe other Monks can do that for their code also?

Well, I have exposed why the OPs code failed, how to fix that, then steered towards a more perlish solution via something like Laurent_Rs solution (first one) arriving at tybalt89s version (with some decoration resembling the OP). Just trying to explain things a bit...

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

In reply to Re^4: Ignore a range of numbers in a List by shmem
in thread Ignore a range of numbers ina List by pr33

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