Minecraft Armor Dyeing?

I'm trying to dye some leather armor in Minecraft, but I do not know how it works and videos bla bla bla did not help. * Xbox One *

Workbench => dye + Leather Armor

Then try where it has to be

No longer works. It used to work but apparently not anymore

https://minecraft-de.gamepedia.com/...C3%BCstung

Does not work since the new update.

In the workbench. It works, but you have to place the dye at a certain place. I wondered at the beginning too.

Then I can't help you srry

And which ones? I tried all combinations.