How to use env_laser in swep.

[LukeDuke]

Hay i wanna make a Laser Gun but i don't know how to make a laser entity. HELP HELP

if ( !CLIENT ) then
//Create the sparks at end of laser
local sparks = ents.Create( "env_spark" );
sparks:SetPos( trace.HitPos ), math.random( -150, 150 ), math.random( -150, 200 ) ) )
sparks:SetKeyValue( "MaxDelay", "0" )
sparks:SetKeyValue( "Magnitude", "1" )
sparks:SetKeyValue( "TrailLength", "3" )
sparks:SetKeyValue( "spawnflags", "0" )
sparks:Spawn()
sparks:Fire( "Kill", nil, PrimaryDelay )

end