Untested: 
($number_newbie_needs) = "|M| (avp-code = 268)(flags = 64)] = XXXX" =~
+ /\] = ([0-9]+)/;

[download]
I'm assuming your numbers are non-negative integers in base ten.

In reply to Re: extraction using regular expression by JavaFan
in thread extraction using regular expression by shrawansher

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