> it worked but there is always a frame late
So it is working! You need to adjust your animation, maybe remove the first frame, or move it to the end of the animation. I can't tell you the exact solution because you didn't share your project.
Thank you very much, you are helping me a lot, I used your idea for the units not to overlap on top of each other, but for some reason when the ones that are moving when they pass over another one that is stationary, then what moves too so, any ideas for the unit that is moving instead of going over the other one just dodge to the sides until you find an exit?