Document Library Dataview Filter error

I have a document library in which I would like to filter based on a substring
of the file name. Basically, I'm wanting to only show the documents in which
there is a underscore for the fifth letter of the "Name" field.

I created a document library view, opened in SPD and converted it to a data
I clicked on Filter and then checked ADD XSLT filtering and clicked the Edit

I added the following code to the filter:


I click Ok and get the following message:
Failed setting processor stylesheet: 0x80004005: Expression must evaluate to a
node set.

Could someone help me with this? I'm not that familiar with doing advanced
coding in a dataview so I'm not sure what I'm doing wrong.


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imstac73Author Commented:
That worked!  Thanks so much.
No problemo
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