How to change temp unit

Hi All,

Sorry for the noob question, however we are using an 1320Electronics bluetooth adaptor with ALDLDroid as a dashboard in our boat.
Trying to figure out how I change the coolant temp and other readouts to be celcius instead of farenheit??

I tried loading the .adx file and editing the definitions within TunerPro, but that didnt really have any affect. Although, I can see it has a table for Celsius calculation?

I'm using the A058-LB4-LU2-L03-L05-LS0-L19-1989-1991-9600 .adx file.

Any help much appreciated.

Thanks