How can I programmatically change the number displayed on a digital control?

[RugbyFan]

In my application, there are two while loops. The inner loop has a digital control where the user can enter a number. If he enters an invalid number, I want to clear his input.

[maymaythar]

One way of doing is see attach..
need to use property node and case structure.

[Joe_Guo]

Right click on the digital control and select "Create Local Variable", write to a default value if the user input is invalid.

or, right click on the control and select property "Data Range", you can change the data range which will be forced upon when user enter data.

Joe