Motor animation

[Roland Melkert]

Code:

[string "Motor_animation.lua"]:57: Active refline link needed.

Line 56/57 is:

Code:

local ref=sf:getRef('piston.ldr', i)
c:setZ(ref:getPos():getZ())

Which is inside a loop of 4 (i).
So the error is about not finding the 1st, 2nd, 3rd or 4th piston.ldr in the linked model.