If position 1 is [B4] or [C1] position 2 must be [Stair + A3] or [Stair + B1]. If position 1 is [Stair + A3] or [Stair + B1] position 2 must be [B4] or [C1].I want to control the family using only 2 toggle parameters i.e position 1 [B4] and [C1]...check the file in the attachment. 2018 Verison file
