sub GEN_HTML {                                                        
+                  # generate HTML for form
    $mp3hash = shift;

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That $mp3hash is a global variable, a strange thing to put a sub parameter in. Did you mean my $mp3hash = shift;?

In reply to Re: Cannot dereference hash in subroutine.... by ysth
in thread Cannot dereference hash in subroutine.... by bigtiny

Title:
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