I have a mechanism that will open a ramp of an elevator cabin by sliding a bar when it makes contact with a wheel/slider. I currently have a tangent mate between the wheel and the bar that simulates the movement when there is contact between them, but this mate doesnt allow the cabin to make the full trajectory since the bar is supposed to stop making contact once the cabin is high enough. Is there a different kind of mate i can use? I´ll add some pictures to see if that makes it clearer, if not, i´ll try to clarify whatever extra info you need. Thanks

The ramp has a limit angle that allows it to rotate from 0° (vertical position) to around 100°. I want the wheel to stop making contact with the bar in the first picture so the cabin can go higher than its current position. Any ideas or suggestions are apreciated