My guess is that 
@msg2 =$gsm->messages('SM');

[download]

didn't return any messages, which means that $#msg2 is -1.

Update:

And at line 94... 

my $dernier_num = $msg2[$#msg2]->sender();
#                       ^^^^^^

[download]

You're trying to access the last element of an empty array!

In reply to Re: Modification of non-creatable array by FunkyMonk
in thread Modification of non-creatable array by Anonymous Monk

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