How do I load a tilemap from json?

Hi, Ideally I want to populate an array with the json data then load from the array into the tilemap. However I can't even get the normal set tilemap from json string working for some reason. I feel like I am missing something very obvious here.

Here's what I've got so far.

https://drive.google.com/file/d/10ngzonI0YE0F_-kpZmk4NZ_NdM28KsEk/view?usp=sharing

This logic doesn't make much sense, what are you trying to do with the array? The load action is for loading pre-existing array data, not tile data. You can set a position in the array to ajax.lastdata and load it later using the tilemap load action.

So I'm imagining it puts the tilemap data in the array & each element of the array corresponds to a tile in the tilemap when you load it, or does it not work like that?

*edit ah I see, is there anyway to do something similar to what I am thinking?

Well my thinking was I want to randomly generate one large long level a little bit like the way the Binding of Isaac puts random rooms together. So I'd take each room that I've designed & downloaded then put it in an array the size of each room (30x17) then put that into a larger 'level array' one next to each other how ever many times to make the one long level.

I guess I could always just create multiple tilemaps & use the former method of loading for each room though now that I think about it.

I'm probably trying to overengineer it & make things way more difficult for myself that need be, my speciality :)

You can store all the room layouts in an array yes but you'll come across a problem that the exits don't sync up if you're creating it in advance. Not sure how people would solve that problem. I made something similar when on exiting a room it created a random room during runtime.

Hmm yeah good point, I've just gone for all the exits & entrances are the same size so line up naturally, but I guess you could take the position of the empty tiles in the first column of the next tilemap & erase the end tiles on the previous to match up? This is for the way I am using the tilemaps, all in a row left to right, no idea for randomly placed ones. Perhaps lining them up based on imagepoints or something.