Numeric Text Field that displays different tag than it writes to?

I’m trying to use a numeric text field to allow the operator to enter a setpoint, but I’d like the field to show a different tag than the one the operator entered. To be specific, I’m having the operator enter a timer setpoint, and I’d like the display to show the remaining time. I’ve tried searching with no luck. Has anyone been able to do this? Or is there another input object that I should be using?