There is a Spawnpoint(1) Doodad to change the starting point. I think the collapse action can't occur if it is too far away from the screen.

Okay, I'll try that.

And yea, they are quite long away, so I might try different solution.

Thanks!

You could activate an OnScreen trigger that collapses the blocks when they are on screen.
Or you can just use an explosion action.

But how far can they be ? Because, it think, they are now something way over 50 blocks apart.

try doing a camera zoom out trigger, i had the same kind of problem and the zoom helped

Okay, time to learn, how to use that. I'm new to this level making, so it takes a long time to understand and learn everything. :) So far I've done good, 2 of 3 levels is ready, started making them in last weekend, just some tweaking needs to be done, like that zoom-thing and small details.

Collapsing steel blocks can be problematic if they are too far. I don't know why.
If you are making a locked door mechanic thing, I did one for this campaign.
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=323510831

Which uses a -99999 damage explosion on the bridge terrain gates, which makes them mostly invincible and effectively collapses them from afar and it looks better too.

At first I tried to make them fall by just walking into position, that activates trigger, but couldn't make the trigger work. Then I decided to make a switch to do that. It worked, but as the block falled too long away, they disappeared. So maybe I just abandon the falling blocks-idea, since it's way too long drop for them and do something else.

Why no make the falling blocks part of the gameplay, like using sand or scaffolding to make them fall.

Originally posted by Soup Calhoun:

Why no make the falling blocks part of the gameplay, like using sand or scaffolding to make them fall.

Not possible to do.

Update. Falling Blocks started to work afterall. But, sometimes there's a glitch that all of them don't settle down propely, couple blocks float above others or sometimes couple of them will fall through earth blocks without breaking anything. They tend to differ every time I load the level again.

And yey, learned to use camera triggers! Level 3 will be Switch-hunt all the way.