A new feature in 6.4 is the item value thresholds, which is a nice addition. However, it appears the thresholds must be numbers and cannot be, for example, macros that represent numbers. Attempting to set a macro {$MYMACRO} in a threshold field results in the following error upon applying:

I want to have my item value widget's background color change based on thresholds I also use for triggers, hence the desire to use of macros to avoid hard coding the value in several places.