Conceal a unit from only a specific player

[Dr.Killer]

Is there a way to hide a unit from only a specific player? I mean it must be visible to other players.
Besides, is there any way to SHOW a unit only to a specific player?
Thanks in advance.

 

[Luorax]

//Player(0) is Player 1
//Player(1) is Player 2
//and so on
if GetLocalPlayer()==Player(0) then
    call SetUnitVertexColor(255,255,255,0)
    //                       R   G   B  A
    //0 Alpha is 100% transparent
    //255 Alpha is 0% transparent
endif

 

[Dr.Killer]

I'll check it soon. Thank you and +rep.