Gets the if the current atribute Vlaue of the control is OFF
Namespace: Palettes.Editor.Fixtures.ContextAttribute
ActionScript.SetProperty(Palettes.Editor.Fixtures.ContextAttribute.ValueOff,[value])
http://[ip]:4430/titan/get/Palettes/Editor/Fixtures/ContextAttribute/ValueOff
POST /titan/set/Palettes/Editor/Fixtures/ContextAttribute/ValueOff