MuleSoft.U Development Fundamentals Week 6 Filtering Messages apdev-flights-ws, filtering is not wo

Please assist me with a problem I'm having with the Filtering Messages segment of Week 6's lesson? I have a scatter-gather router, with flow references for each of the airline Sub flows. The lesson is supposed to instruct us how to create a payload filter. But while applying payload filter in all the flows for American,united and delta , I am not getting flight from PDF with united airline as expected from the

http://localhost:8081/flights?code=PDF

Instead it is still giving "No flights to PDF".

Here , I am not using Payload Filter for United Flight Flow for getting the expected result.

Attached are my config and global XML files.implementation.txt