[HELP]Uniform for police!

[kahvifetis]

Okay so im trying do this and it just tell's me Uniform changed but uniform wont come to my character

And yes im pretty new on coding LUA. In only know how to fix some scripts

function uniformu(player) 
       setPedSkin(player, 287) 
end 
addCommandHandler("uniform", uniformu) 
      function uniformu(player) 
       outputChatBox("Uniform changed!", player, 0,255,0) 
       setPedSkin(player, 287) 
end 
addCommandHandler("uniform", uniformu) 

Picture from game:

[golanu21]

setPedSkin change to setElementModel