find position of first occurrence in a node set

Greetings,

I have a node set that looks like this:

<transaction_set>

 <segment type='SL'>
   A
 </segment>

 <segment type='GS'>
   B
 </segment>

 <segment type='HL'>
   C
 </segment>

 <segment type='PR'>
   D
 </segment>

 ....

</transaction_set>


I need to find the position of the first <segment> element that has the 
type of 'HL'.  So for my example above it should return 3.

Thanks you in advance,


--

James Neff
Technology Specialist

Tethys Health Ventures
4 North Park Drive, Suite 203
Hunt Valley, MD  21030

office:  410.771.0692
cell:    443.865.7874


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