What is wrong with my Script?

This script is supposed to change the Characters Mesh to Different Mesh Ids, But It only works via the Torso... Tell me why?

while true do
    for _, plr in pairs(game.Players:GetPlayers())do
        plr.Character.Head.Mesh.MeshId = "http://www.roblox.com/asset/?id=19999257"
        plr.Character.Head.Mesh.TextureId = "http://www.roblox.com/asset/?id=20001023"
        plr.Character.Head.Transparency = "0"
        plr.Character.Head.face.Texture = "0"
      c = Instance.new("CharacterMesh") 
      c.Parent = plr.Character
      c.Name = "hj"
      c.MeshId = "27111894"
      c.BodyPart = "Torso"
      c:Clone().Parent = plr.Character
      wait()
      c.Name = "yo" 
      x.BodyPart = "Left Arm"
      c.MeshId = "64022346"
         wait()
     c:Clone().Parent = plr.Character
	  c.Name = "Lfg"
      c.BodyPart = "Left Leg"
      c.MeshId = "64022355"
        wait()
    c:Clone().Parent = plr.Character 
     c.Name = "Rig"
     c.BodyPart = "Right Arm"
     c.MeshId = "27111894"
      wait()
  c:Clone().Parent = plr.Character
    c.Name = "fg"
    c.BodyPart = "Right Leg"
    c.MeshId = "64022355"
    end
    wait() 
end                  
   

It seems you might have had a typo on line 15, x to me seems like a nil value which would error out the script. You've been using c the whole time with all of your meshes, so use c on line 15.

while true do
    for _, plr in pairs(game.Players:GetPlayers())do
        plr.Character.Head.Mesh.MeshId = "http://www.roblox.com/asset/?id=19999257"
        plr.Character.Head.Mesh.TextureId = "http://www.roblox.com/asset/?id=20001023"
        plr.Character.Head.Transparency = "0"
        plr.Character.Head.face.Texture = "0"
      c = Instance.new("CharacterMesh") 
      c.Parent = plr.Character
      c.Name = "hj"
      c.MeshId = "27111894"
      c.BodyPart = "Torso"
      c:Clone().Parent = plr.Character
      wait()
      c.Name = "yo" 
      c.BodyPart = "Left Arm"
      c.MeshId = "64022346"
         wait()
     c:Clone().Parent = plr.Character
      c.Name = "Lfg"
      c.BodyPart = "Left Leg"
      c.MeshId = "64022355"
        wait()
    c:Clone().Parent = plr.Character 
     c.Name = "Rig"
     c.BodyPart = "Right Arm"
     c.MeshId = "27111894"
      wait()
  c:Clone().Parent = plr.Character
    c.Name = "fg"
    c.BodyPart = "Right Leg"
    c.MeshId = "64022355"
    end
    wait() 
end                  

Hmmm Interesting, Pm An Admin perhaps?