Set the value of a scene element.
Applies only to CheckBox, Number Picker, Slider, Spinner and Toggle elements.
For a CheckBox, value should be 0 (off) or 1 (on).
For a Spinner, the value is the index of the item to set.
The scene must have been created first.
The action can only trigger a possible event associated with the element value if the scene is currently showing.
To set the value of a Text, EditText or Button element, use the Element Text action.