How you make a skyshader that draws a sun?

[Raiyaka]

Hello. I've just made this shader: (been following the Custom Skyshader tutorial found at Rich Diesel's)

textures/japsky/sky

{

qer_editorimage textures/skies/sky

q3map_lightRGB 1.50887573964 1.50887573964 1.50887573964

q3map_skylight 200 5

surfaceparm nomarks

surfaceparm sky

surfaceparm noimpact

surfaceparm nodlight

q3map_lightmapFilterRadius 0 8

q3map_sunExt 1.000000 0.997119 0.857641 350 142 35 1 2

notc

q3map_nolightmap

skyParms textures/japsky/sky 1024 -

}

But:
"q3map_sunExt 1.000000 0.997119 0.857641 350 142 35 1 2"

That line is supposed to draw me a nice shiny sphere of sunnieness!
But it doesn't.
The sky and the light itself works fine though... but I want my pretty sun!

Help me ppl.