Check player are in a task

So i want to check if player are in a task
Example:
When a player is in a task name "Particles1". He cant join other task

 

Can you give us example code? I don't understand your question

 

Going off of what I think you mean, I would add an identifier for the player, like the name, and save it in an array when the task is started. Then, you can check that array when starting other tasks.

 

thanks!