This property isn’t supported and maps to the Checked property.
In addition, there is a minor difference in what happens when you set the property to False in a radio button that is currently checked. In a VB6 OptionButton control, setting this property to False fires no Click events; in a VB.NET RadioButton control this assignment causes a Click event. (Note that you typically set the Value property to False when you need to display a group of unchecked buttons.)
To fully mimic the VB6 behavior, VB Migration Partner provides a ResetValue method, which changes the value of the Value property without firing any event:
optChoice.ResetValue(False)