Deal with button presses on the attribute group buttons.
Namespace: Attribute.Mask.CurrentMask
Void Attribute.Mask.CurrentMask.GroupButtonPressed(Int32 groupButtonId)
http://[ip]:4430/titan/script/2/Attribute/Mask/CurrentMask/GroupButtonPressed?groupButtonId={titanId}
groupButtonId ( Int32 ) : The index of the group button to toggle.