Not necessarily the last parameter. What I really want is to temporarily override the setpoint with the middle buttons, selecting setpoint with the outers and changin will cause a permanent setpoint change. That way, bump the heat on (or A/C) with the middle buttons, and after a set time (that could easily be set as a program parameter) the setpoint returns to what it was. Clear as mud? All I think i really need is a variable that reads whether or not the button is pressed, and the rest could be coded in a program. That variable ONLY reads a press when NOT in a selected mode via the outer buttons.
I could just write the program so that the temperature setpoint is not changeable, only a temporary override via the thermostat, but would rather have it so that only one button press is necessary to bump the heat.