TargetTracker Delay&Reset help

Hi! Guys!
I need help

  1. Countdown animation start(3,2,1…)
    2.After the countdown is complete, targetTracking

*I referred to the tutorial video, but the tracker didn’t work
I thought it would be solved by turning the layer on or off.

Take a look at this thread, it might help. PlaneTracker scripting best practices? - #4 by Hap

If not, can you share more about what you tried? Sharing an example project is a good way to get help since we can see the problem directly and try our solutions instead of just guess.