NWjs, tilemaps and JSON [SOLVED]

Hello, I am trying to export a map created with a tilemap object, to export I use "NWjs write file", so I export the map in a txt.

I'm using NWjs to preview.

Then to load that txt in a tilemap I do this with the tilemap: "Load tilemap from JSON" but I can not load the map, that is, the map on screen does not change when I load it, it just does not happen nothing.

What am I doing wrong?.

EDIT:

OK, it should be done this way.