Guessing from the error message, because of the closure 

my $worksheet ...
sub colcmp {
  ...
  $worksheet

[download]

Usually the remedy is to write your functions like 

 colcmp( $worksheet,  ... );
sub colcmp {
    my( $worksheet, ... 
}

[download]

In reply to Re: get_xf_index error by Anonymous Monk
in thread get_xf_index error by ag4ve

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