- Property Watcher on an empty value

Property Watchers can be used to evaluate the value of one property to determine the value of a second property.  In this example, if the Date is set to none, then PropA will be set to 3003, otherwise you can set PropA to a value from the domain list.

To do this, PropA is defined as a comboBox with a series of values.  This would be a typical combo box that you would create for your project.

In the ComboBox Properties, set the default initial value to the value that will be set if the Date field is empty.  For our example, that's 3003.