Sky maker problem

[Sura]

Ive just made a map and created a sky for it. So I typed the name of the file down in the map maker, as I always so.
Sometimes it works but now it just shows the default sky when Im on my map.
What did I do wrong?

[Ingredient]

Map Maker only shows the "day" time sky, not the night sky or the dawn sky just the day sky. When you test your map the sky will change from the default sky to yours.

[Sura]

But the sky Ive created wont work in-game.

[Ingredient]

What do you mean wont work? Is it not showing up when you type it in?

[Sura]

I typed it in, saved it at the map maker and when I go in-game to my map its not showing up.