Import data from the active Excel file

Hello,
I am trying to achieve a working method which allows me to detect and import data by Selection from an active/open Excel file. The goal is to detect the selected data from the open Excel file.
I’ve seen a similar to concept to import geometries from an open Autocad file in the LinkDWG package.
Thanks to Koz Jono YEOH I have the following code. However I have an error and empty list
Thanks in advance

import sys
import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

try:
	import os
except:
	sys.path.append(r"C:\Program Files (x86)\IronPython 2.7\Lib")
	import os

rtn="Input Excel file to open"
xls=IN[0]
if xls and os.path.exists(xls):
	try:
		from System import Type, Activator
		t=Type.GetTypeFromProgID("Excel.Application")
		r=Activator.CreateInstance(t)
		r.WorkBooks.Open(xls)
		r.Visible=True
		rtn=[r, r.ActiveDocument]
	except: rtn="Exception found"

OUT = rtn

Hello @a.halim
Maybe this post can help you