You need to create the filter based on the integer representation of the status value you are looking for, like this:
Not Started 0
Failed on Start 1
In Progress 2
Error Occurred 3
Canceled 4
Completed 5
Failed on Start (retrying) 6
Error Occurred (retrying) 7
Canceled 15
Approved 16
Rejected 17
Wednesday, 5 March 2008
Filter Views based on Approval / Workflow Status
Posted by Unknown at 14:17