For example, you can set DecimalPosition property to 2 and ValueScaleFactor to 100 (these are tied together which means that if you set the DecimalPosition property to 3 then the ValueScaleFactor will need to be set to 1000).
Then you can set both PLCAddressKeypad and PLCAddressValue to F40111.
When you run the program, if you click the DigitalPanelMeter the keypad will pop up so you can write a new value to that location and see it on the meter.