Match Pattern does not function properly when searching for a null character

I'm using Match Pattern to extract a null terminated string from a response I'm getting from a device on a serial port. The VI is attached and below is a screenshot of the block diagram.
It works just fine with index set to 0, 1, or 2. When index is 3, I get the output shown below.
Why is Match Pattern not finding the null character?
Thanks!
Solved!
Go to Solution.
Attachments:
Grab Nullterm String.vi ‏15 KB

I'm a dope, need to remove the wire from the Offset control to the Match Pattern control.
DUH!

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