Problem adding sprite (XWE+GZDOOM+DOOM BUILDER)

XWE + GZDOOM + DOOM BUILDER 2
Hello,
I'd like to add a new sprite to my doom II map. It's a single frame, single point of view object.
I've imported the image, I can see it in the wad sprites.
I've named it:

MEDFA0


Secondly I've created a LUMP in this way:

actor BigFlame 10242
{
Height 40
Radius 20
+SOLID
States
{
Spawn:
MEDF A 10
Loop
}
}


But when I add the thing 10242 in Doom Builder 2, and test the game, I see a square with an exclamation mark. I really don't know if the problem is in the wad editor or in the LUMP format, or in the way I add the thing in Doom Builder II.
Any help will be appreciated.
Thanks!

Is that lump named DECORATE?
Is it in the same file as your level, or another file that's loaded together?
Is the sprite lump likewise available? Is it in the Sprite namespace (between S_START and S_END markers in a wad, in a Sprites subdirectory in a pk3)?

Gez said:

Is that lump named DECORATE?

This was the problem! Thank you very much!