I downloaded the new eud editor 2 and also eud draft.

I used it to modify zerg melee upgrade icon to a creep colony icon.

My map doesn't show the EUD trigger, or any other EUD trigger I tested.

Any idea what I did wrong?

When you save using EUD Editor 2, It will create a new map and inject the triggers with all the EUD changes.

Make sure you creating the game with the correct map.

I tried that already the map has the triggers in it but it doesn't show in game.

The way EUD Editor makes its changes are through triggers. Placed units are already on the map BEFORE the first trigger cycle. If you are changing graphics, unit sizes, etc of Units that you have place within the map they will not update when the game is created. Everything created after will have the changes applied.

There are some things that change regardless, but its a good rule of thumb to spawn the units you want in the map at the beginning.

Oh yeah I have pre placed zerg evolution chamber on the map, I'll try creating it and see what happens.

I got other eud triggers to work but changing the upgrade icon doesn't work.

I got it to work, I went to firegraft, I was trying to edit upgrades on datedit. firegraft is what changed the icon for me.