Ik how to find out if a player enters region3. But how do i find out if player has left region3?

        while true do
            wait(0.5)
            local partsinregion = workspace:FindPartsInRegion3(region, part, 1000)
            local playerFound = {}
            for i, part in pairs(partsinregion) do
                if part.Parent:FindFirstChild("Humanoid") ~= nil then
                    print("Player found in region!" .. part.Parent.Name)
                    playerFound[part.Parent.Name] = true


                    local playerr1 = part.Parent.Name
                    local playerr2 = game.Players:FindFirstChild(playerr1)
                    local frame = playerr2.PlayerGui.Craftinggui.Frame
                    frame.Craftingtablegui.Visible = true


                end
            end
        end
    end
end