How to filter items with "S" in the 3rd position?

[gatorfe]

What is the syntax I can use to filter items that have an 'S' in the third position?  Thanks in advance for any suggestions.

[cschnu]

I believe the function you are looking for is

Code Select Expand

substr([Package][View][Field], startposition, length) = 'S'

[Gopinath]

Try

substring([Dataitem], 3, 1) = 'S'