I face problem in animation and red timeline appeared, My part called "valve" doesn't move by the part called "piston" as I designed, as if the distance mate doesn't exists, please look at this image and find the attached archive
Thanks a lot, but this is not a solution, I hope that SolidWorks team to enable limit distance mates in animation on the next version or update, Now I can use key point in my timeline on exist mate design
Sorry but limit mates doesn't work in animation/motion. You need to use the distance mate.