Are these possible?

[tf2cqhz4m4-afk]

Can someone tell me a code so you can only place certain blocks on other certain blocks, so like you cannot place or break anything but if you try to you can place like a maple wood planks block on a jungle wood planks but nowhere else you know?

Also if there a code so if you try to use a bed you instead get teleported below it and back out again so you can hide under it,

And if there’s a code so if you use a item that’s in your hand (for example like red carpet or something) you can teleport where you are looking

[r04-star]

Try using the onPlayerChangeBlock callback. The logic is simple: when a block is placed, use api.raycastForBlock to check the block underneath. If it's not the required type, trigger preventChange. I’m a bit too lazy to write the full code for you, but that algorithm should definitely work since all the parameters are available. Give it a shot! and I didn't really get the rest of your questions due to the language barrier, so I can only help with this one