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Hi, I am tracking to use automation data coming from Creative Conners Spikemark to have a virtual display track a set piece flying in and out of the stage. The input data stream from Spikemark and tween formula is tracking nicely on the Y axis, so far so good. However, as the set piece moves either above or below the projector lens (188.5 on the Y axis), the Z axis needs to change as the set piece is moving further away in 3D space, so Z axis needs to be conditional on the value of Y. So, I think I’m looking for some help writing this expression. Will If / And / Else statements work? Something like If Y = >< 188.5 then z = y-1 else z=0 This is the first time I’ve tried to track a 3D object using automation data, and unfortunately there is little time for tweaking it. Does anyone have experience they can lend to help? Thank you, Jason Vaughan