can't get external sensor to show up in 'chart vs. time'

Hello,

I am trying to get my external fuel pressure sensor to show up in the 'chart vs. time' graph. It is in the Channels listing, and it logs data just fine. I have attached my log file, channel config, and math function for the external sensor.

HP Scanner version is 4.5.1446 Beta

Attachment 99580
Attachment 99581
Attachment 99582

Anybody want to hazard a guess at how to do this?