[Sunstroke]

It happens on the robot side. The NetworkTable does nothing unless a value changes.

Changing the value of the double a little bit would do what you want.

Also, although this is a mildly awful idea, you can have your widget change the value of the element in the field every time it reads in a value. That way, when the robot puts in a new value, it will be different. However, that will change the value in the table...