Laptop XRANDR resolution overclocking

#!/bin/bash

RES=$(
    zenity --list \
        --title="Choose your new resolution" \
        --radiolist \
        --column="" --column="Resolution" --column="Alias" \
        0 "1366x768" "HD" \
        1 "1920x1080" "FULL HD" \
        2 "3840x2160" "4k UHD ULTRA SWAG" \
        3 "7680x4320" "8K HOLY SHIT" \
        4 "15360x8640" "16k WTF"
)

if [ ! -z $RES ]; then
    RANDR=$(xrandr --output LVDS1 --scale-from $RES --panning $RES)
    if [ ! -z $RANDR ]; then
        zenity --notification \
            --window-icon="error" \
            --text=$RES
    fi
fi