How do I create object based on loop number in variable?

Hello, this is really first time I use Construct 2.

I want to create object that puts in random position limited by amount of a variable. But each time I use "for", everything is ended on infinite loop.

Following this tutorial

...but I still getting an infinite loop.

Did I miss something?

Here is my event:

Thank you.

You need to try a few more tutorials. C2 is a repeating script - your event sheet runs every tick, so your event is being repeated constantly. For now add 'On start of layout' and drag your event as a sub-event of it. It will then just run once.