Reality Factory

Hello to all.
I am working on my FPS project. So i have big open terrain, and i need nice sky.
I made with sky so far nice but i want to get rid off that black part of sky or if it couldnt delete if i can to do to this black part isnt visable.
So how to set my script, here is my sky script, to get this black part goes under my level, or somethig. Help me.
P.s. I started to build my level about 2 days ago so dont smile on my level.



{
Start[ ()
{
SetHeightOrigin(-1000);
SetLandscapeSize(40200);
SetSkyDome(4920, 4920);
SetVertScale(1);
SetHorizScale(1);
SetDesiredTriangles(1024);
SetSkyTexture("clouds_256.bmp");
SetDistanceFromSunFactor(40200);
SetTwilightDistanceFromHorizon(0.6);
SetLocation(920, 10, 16, 23);
SetTwilightColor(255, 101, 114, 255);
SetSkyColor(116, 208, 241, 255);
SetTimeScale(512);
DisableSun(true);
SetSunColor(255, 226, 146, 255);
SetSunScale(8);
SetAmbientLightColor(128, 128, 128, 128);
DisableCloud(true);
UseSkyFog(false);
} ]

Run[ ()
{
SetWindDirection("northeast");
} ]
}

ummm, wheres the level??