for i,v in pairs not changing the size of all parts?

for i, v in pairs(game.Workspace.Obby.Regular.Push:GetChildren()) do
    if v.Push then
        local part = v
        local value = v.Push.Value
        spawn(function()
            while wait() do
                wait(value)
                part.Decal.Texture = "rbxassetid://272632642"
                for i = 1,(part.Size.z / 0.30) do
                    part.CFrame = part.CFrame + (part.CFrame.lookVector * -0.30)
                    wait()
                end
                wait(value)
                part.Decal.Texture = "rbxassetid://334960362"
                for i = 1,(part.Size.z / 0.30) do
                    part.CFrame = part.CFrame + (part.CFrame.lookVector * 0.30)
                    wait()
                end
            end
        end)
    end
end

Making a script that increases the size of all the parts with a "Push" Value inside of them in a folder but only one part is actually increasing in size but the others aren't

How do I fix the problem?