Guild Wars 2

Could it be possible to retrieve the Z-Coordinate of an POI via the API?
I want to calculate the vertical distance between the players position and POIs but I see no possibility to do this at the moment.

This has been asked already a loooong time ago, along with a question about heightmaps…

Has it been answered?
I could use the mumble link to get the Z-coordinate but that would be a lot of work and woudn’t be safe because of updates.

For the map’s that have multiple floors in the Tile Service, I use the mumble Z-coordinate to determine which Floor to use.

The API for map_floors/PIO do give which floor the POI is on.