How Do I Make An Eyes Blink Script For Morph?

Guys I Need Your Help. I'm Trying To Make An Eyes Blink Script That Works When A Player Pick A Morph.

Can You Guys Help Me Add The Function?

local script.Parent

while true do

    light.Transparency = 0

    wait(.15) 

    light.Transparency = 1

    wait(1.8) 

end