why isnt morphed character moving?

so i have made this morph script, problem is character doesnt move when morphed what may cause the problem?

function PlayerSize()
    char = plr.Character
    st = game.Workspace.Test12
    clone = st:Clone()
    clone.Name = plr.Character.Name
    clone.Parent = workspace
    clone.Torso.CFrame = plr.Character.Torso.CFrame
    plr.Character = clone
    char:Destroy()  
end