Not working my mobile touch system ! Why ?

local Imag = script.Parent.ImageLabel
local Int = workspace.Hozaerve  

local function onTouchTap()
    if Imag.Image == "rbxgameasset://Images/I-H-W-M" then
        Imag.Image = "rbxgameasset://Images/I-H-B-M"
        Int.Value = true
        wait(0.1) 
        Imag.Image = "rbxgameasset://Images/I-H-W-M"
        Int.Value = false
    end
end

Imag.TouchTap:Connect(onTouchTap)