How to make objects spawn in different positions in different amounts?

So I'm working on a game where you spawn in a randomly generated level and have to navigate around "trees" and such, and I want a random amount to spawn and in different spots every time. Trying to use a repeat or for function makes the trees spawn infinitely. Here's my file in case anyone wants to look at my code and help me out:

drive.google.com/file/d/1sD_wQFLpdkEwUI8eAEDHl_pqDBp3Hg0g/view

Thanks to anyone who helps.

Hi.

You were close. You just need to place the spawn at the start of the layout.

I only have Construct 3, so here's a screenshot of your code.

Hi.

You were close. You just need to place the spawn at the start of the layout.

I only have Construct 3, so here's a screenshot of your code.

SOLUTION: