How do I create a spawner that stops spawning when destroyed

In my events sheet, I have a red spaceship spawning at a certain location every 6 seconds. It looks like this:

system: every 6 seconds system: spawn red spaceship

Then I added a red portal to the spawn area, which is 200, 200 (x and y). I then added another event:

red portal: on destroyed red spaceship: destroy

How do I change it such that it is fixed?

You should spawn the spaceship from the portal. When a portal destroyed, it should no longer spawning spaceship. Is that what you want?

Yes! Thanks for the help!

Just for learning sake... you could also use a variable.

on start - spawneralive = 1

In the spaceship spawn event condition spawneralive = 1.

When spawner destroyed add action - system set spawneralive = 0.

Ok, thank you too!