I got a question for you, expert designers: How do you connect triggers on the first level (where the clone is) to the background levels? (For example the first sceen in Pizzaandy's BOSS FIGHT where this thing in the background moves down and dissapears.) Please reply if you know how!
You mean layers? Select a trigger in the first layer, then switch to the background layer, and you'll find that that trigger is still selected. Now you can do it
Put down your trigger in the desired layer. Then click on that trigger, and open its properties menu. Then switch to the layer in which you want to target your object/event/variable/etc while still having that properties menu open. In the properties menu, drag the target object/Forward to the object/event/variable/etc you want just like how you would for things on the same layer. Hope it's clear to you!