In this chapter we've tested if you can create things in JCS of JJ2 from JJ1.
Here are the results:

TUBELECTRIC: Could you create JJ1-electric walls for JJ2 in JCS?

We have tried it, but the walls only could hurt you, or you can shoot them away. Hard choice. It is only possible in JJ1.

End result: Myth BUSTED

ORBITUS: Could you create bouncy floors for JJ2 in JCS with spring-events in it, like in JJ1?

This is possible, but it is very hard. The best way is with Suck-events.

End result: Myth PLAUSIBLE

NIPPIUS: Could you make ice slippery for JJ2 in JCS?

Yes, that is possible. Don't use the Slide-event (doesn't work) Use a wind event. But if you made it to the other side and you like to go back, the ice will 'push' you back.

End result: Myth PLAUSIBLE

DREEMPIPES: Could you create a button were you can shoot on it that can change the water-height for JJ2 in JCS?

No. You should add an Water-height-event on a button. The only way to activate it, is jump at it.

End result: Myth BUSTED

BATTLESHIPS: Is it possible to create an 'end-boss-reactor-thing' at the end that you can destroy to exit the level for JJ2 in JCS?

That is possible. Put an Bubba-Boss-event on the reactor. DO NOT USE AN ACTIVATE BOSS-EVENT OR BUBBA IS BUBBA AND NOT AN REACTOR!
And in JJ2 it is not possible to see the 'health' of the reactor.

End result: Myth PLAUSIBLE

LAGUNICUS: Is it possible to create a water-height-pole that can change the water-height for JJ2 in JCS?

Yes! No problem! With some trigger zones and a trigger scenery you can change the color of the pole and with Water you can change the water height. In the middle, put the Trigger Scenery, then the Trigger Zone around it and then the water around that.

End result: Myth CONFIRMED