easy 7zip add/create new archive or extract TERMINAL SHELL SCRIPT

#!/bin/bash
####################################
#
# START
# g0ne_@p0stal <v1ral_ITS>
# ImPerialTeKSolutions@outlook.com
#
####################################
echo "          #              #      "
echo "          ################    ####"
echo "          ################    ####"
echo "          ################     ##"
echo "                         #"
echo "             #################"
echo "          ####################"
echo "          ####################"
echo "          ##             #"
echo "          ##"
echo "            #"
echo "          ####      ## "
echo "          ####    ###### "
echo "          ##     ######## "
echo "          #     ####     #"
echo "          #     ####     #"
echo "          #     ####    ##"
echo "          #    ####    ## "
echo "           ########   ####"
echo "            #####"
echo " v1ral_ITS"
echo " https://pastebin.com/u/v1ral_ITS"
echo " ImPerialTeKSolutions@outlook.com"
sleep 3

read ADD_EXT < <( zenity --title "Add/Create Or Extract" --width=560 --text " Add - [a] or Extract - [x] " --forms --add-entry "ANSWER:" )
read ITS_LIST < <( \ls . | zenity --title "Choose File From Current Direcotry" --list --column "ImPerial TeK. Solutions {v1ral_ITS}" --width=1000 --height=200 )
if [[ $ADD_EXT == a ]]; then
    read ADD_FILE < <( zenity --title "Add Files To Archive" --width=560 --text " Name The .7z File " --forms --add-entry "NAME:" )
    7z a $ADD_FILE ./$ITS_LIST
fi
if [[ $ADD_EXT == x ]]; then
    7z x ./$ITS_LIST
fi