I need to do the following find and replace. i.e. need to fill in the 'refid' by matching the 'label' text. Unfortunately my script is producing unexpected outputs. pls review

Input:

<crossRef refid="">xx</crossRef>
<crossRef refid="">yy</crossRef>

<affiliation id="aff01"><label>xx</label>
<affiliation id="aff02"><label>yy</label>

[download]
Output:
<crossRef refid="aff01">xx</crossRef>
<crossRef refid="aff02">yy</crossRef>

<affiliation id="aff01"><label>xx</label>
<affiliation id="aff02"><label>yy</label>

[download]
my code: 
    if (/<affiliation id="(.+?)"><label>(.+?)<\/label>/)
    {
      $affid=$1; $afflbl=$2;
      s!<crossRef refid="(.*?)">$afflbl</crossRef>!<crossRef refid="$a
+ffid">$afflbl</crossRef>!g;
    }

[download]
my code is not working properly. please suggest me the correct way of doing it.

In reply to find and replace by texuser74

Title:
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