Showing Deg C

How do you include verticle bar to read Deg C on board 8055 working with K8067?
I have tried to incorporate the line as per K8067 documents Page 12:

This give an error that -23 is not an allowable quantity. (I know this should be 0 - whatever)

Any advise please.

A vertical progress bar cannot have a negative value.
If you add an offset of 23, it will not go below 0.

Thank you Vel417.
I have found a way to make the vertical progress bar read temperature from the K8067 successfully, still using the form Value = (101*Data2/256)-23… Tested over a range of temperatures. Problem solved.