How do I pipe temp data from 1W to kplex for distribution as NMEA0183

[jim321]

i have been trying to get water temp to opencpn dash with mqtt and have never gotten it to work right v.010 up to v1.0
set in sk plug in nmea converter to use mtw
right now it shows in sk diag. opsensors.mqtt.watertemp env.water.temp ..when i heat it up value goes up in diag in K value
in opcpn dash shows -244 when heated up the value goes down.??