(SOLVED) Can someone help with making an npc flash in and out of view?

while true do
    script.Parent.LeftFoot.Transparency = 1
script.Parent.LeftLowerLeg.Transparency = 1
script.Parent.LeftUpperLeg.Transparency = 1
script.Parent.RightFoot.Transparency = 1
script.Parent.RightLowerLeg.Transparency = 1
script.Parent.RightUpperLeg.Transparency = 1
script.Parent.LowerTorso.Transparency = 1
script.Parent.UpperTorso.Transparency = 1
script.Parent.LeftHand.Transparency = 1
script.Parent.LeftLowerArm.Transparency = 1
script.Parent.LeftUpperArm.Transparency = 1
script.Parent.RightHand.Transparency = 1
script.Parent.RightLowerArm.Transparency = 1
script.Parent.RightUpperArm.Transparency = 1
script.Parent.Head.Transparency = 1
script.Parent.Head.face.Transparency = 1
script.Parent.Head.RightEye.Transparency = 1
script.Parent.Head.LeftEye.Transparency = 1
wait (4)
script.Parent.LeftFoot.Transparency = 0
script.Parent.LeftLowerLeg.Transparency = 0
script.Parent.LeftUpperLeg.Transparency = 0
script.Parent.RightFoot.Transparency = 0
script.Parent.RightLowerLeg.Transparency = 0
script.Parent.RightUpperLeg.Transparency = 0
script.Parent.LowerTorso.Transparency = 0
script.Parent.UpperTorso.Transparency = 0
script.Parent.LeftHand.Transparency = 0
script.Parent.LeftLowerArm.Transparency = 0
script.Parent.LeftUpperArm.Transparency = 0
script.Parent.RightHand.Transparency = 0
script.Parent.RightLowerArm.Transparency = 0
script.Parent.RightUpperArm.Transparency = 0
script.Parent.Head.Transparency = 0
script.Parent.Head.face.Transparency = 0
script.Parent.Head.RightEye.Transparency = 0
script.Parent.Head.LeftEye.Transparency = 0
wait (1)
end

this is some code i made to try and make the NPC flash in and out of view (the eyes being seperate parts welded to the head) but it seems to just turn invisible and stay that way, and the eyes stay visible. Can someone help?