AWS: Running a docker-image with ECS (part 3): Stop it!

After running a docker-image on ECS i tried to stop my service:

But after a view seconds the task was respawned:

Hmmm - "select cancel and update the service to stop the task"...
"Update the service" is not so difficult:

But there is no stop button.
After reading every row over and over again, i tried the following:

I set the number of tasks to 0:

 

And a few seconds later the taks has really stopped: