fm_set_kvd(entFog, "density", 0.007, "env_fog")
fm_set_kvd(entFog, "rendercolor", "0 255 0", "env_fog")
or
fm_set_kvd(entFog, "rendercolor", {0, 255, 0}, "env_fog")
i dont know anymore how it goes
anyway if that not working there is anyohter way
static density[16], rcolor[16]
formatex(density, charsmax(density), "0.007")
formatex(rcolor, charsmax(rcolor), "0 255 0")
fm_set_kvd(entFog, "density", density, "env_fog")
fm_set_kvd(entFog, "rendercolor", rcolor, "env_fog")