Global '((NAME))' is only used in the enclosing function; consider changing it to local?

Hi, I'm trying to edit a script to fit my thing and so far the only thing that comes up is Global 'child' is only used in the enclosing function; consider changing it to local

and then I get a Unknown global 'mesh'

CHILD SCRIPT

script.Parent.MouseButton1Down:connect(function() local gui = script.Parent.Parent local base = gui:FindFirstChild("Page2_Slot1_TextBox") if gui and base then if base.Visible == true then Child = gui:GetChildren() for i = 1,#child do if child[i].Name:sub(1,6) == "Page2_" then child[i].Visible = false child[i].Active = false script.Parent.Text = "Save Slots" script.Parent.BackgroundColor3 = Color3.new(162/255, 171/255, 255/255) end end

UNKNOWN SCRIPT

--Setting sizes for the mesh xsize.Value = xsize.Parent.Text ysize.Value = ysize.Parent.Text

        if ysize.Value > 10 then
                ysize.Value = 10
            elseif ysize.Value <= 0 then
                ysize.Value = 3
            end
        if xsize.Value > 10 then
                xsize.Value = 10
            elseif xsize.Value <= 0 then
                xsize.Value = 3
        end
    mesh.Scale = Vector3.new(xsize.Value,ysize.Value,0.7)
    mesh.Offset = Vector3.new(0,ysize.Value - 3,0)
    end 
end)

Honestly, I've tried doing as the Script Analysis says, but I just don't know. What am I supposed to do?! D: