Help: How to change tiles with a command while in game?

So I was wondering how would I change a tile while with an event so I could do something like when you step on a block it will be cracked. All help would be appreciated.

The crack and hole graphics are located(by default, so location may be different if you are using other tilesets) in the "Interior" tileset, and where you select the event graphic (NPC's, switches, etc...) scroll to the very bottom of the list and you will find "Tileset-B" and "Tileset-C". They are found in those.

This example shows a progression from solid floor, to cracked floor, to a large hole in the floor which you can fall into. Both in the event pages and as it appears in-game. Just remember, pay attention to all the settings on the event page, not just those in the "Contents:" list.

Thank you this helped so much.

Glad it helped! ^_^

You can add the "Transfer player" command to the second page(where you used the cracked floor) and have them fall through as it opens up the rest of the way if you want.

I'd recommend making an "experiment" game and use it to just play around with settings and commands for a bit. You can learn a lot and doing it in a game file dedicated to playing around like that will prevent it from messing up your actual game project. Especially when you start experimenting with scripts!

I keep one around at all times to play around in whenever I try something I'm unsure of before I add it to my real project.