Face gauge status depends on Gauge Name
Currently I have a Face Gauge card, with a Gauge Value that is a Count of a field. I set the ranges and the face displays green, yellow or red.
When the only thing I do is change the Gauge Label by dragging a different field on it, the face changes color. Dragging the original field to the Gauge Label returns the face to the original color. I don't understand how changing the Gauge Label changes the Gauge Value field, and can't find any information in the documentation. Would it please be possible to explain how the displayed face depends on the Gauge Label?