Open custom inventory (no fake tile hack)

I know, that already was discussed in https://forums.pocketmine.net/threads/opening-inventory.8955/page-2, but is there a different/better way to do it? The problem with the current code is you have to place a chest at 0 0 0, remove it and then restart the server. And you have to be in the chunk of 0 0 0 for it to work. Any ideas?
And can you set the name of the chest? So that it shows up like on pc version when you rename a chest and open it? (Not "chest" standing on top but the chests name)

i think, the best way is send some packets to player.

first i save player coordinates and send BlockUpdatePacket with chest block (this works), then i send BlockEntityPacket with the same coordinates and then send ContainerOpenPacket with these coordinates. and onClose i remove block

maybe i'll make some API for this.

im recommending to make your own inventory class and fakeHolder class, and sendPackets in onOpen() and onClose() method

I did that. this all didnt work.

also i dont want the players to see a chest

It works for me and they dont if you spawn chest behind, above or 2 blocks under player

If its glass? (It is in my case)

When player closes the window, chest dissappear in few miliseconds (depends on ping)

Then its exactly the same like i currently have
Also all that are no real fake inventories. They are "fake tiles" but directly send to the client. I wanted to open a window and handle everything inside the plugin. Transferring items etc