Open an Excel spreadsheet with powershell getting error

I am trying to open an excel file within power shell. Here is the code i am using 

$excel =New-Object-com excel.application
 
 
$excel.Visible=$True
 
 
 
$excelfile ="C:\Users\adm_kmccallion\Desktop\AssetInventory.xlsx"
 
 
$sheet='Test'
 
 
$ou ="ctnet.com/Eton"
 
 
 
#$ExcelWorkbook = $Excel.Workbooks.Open($ExcelFile, 2, $True) 
$ExcelWorkbook=$Excel.workbooks.open("C:\Users\adm_kmccallion\Desktop\AssetInventory.xlsx") 
 
$ExcelWorkSheet=$Excel.Worksheets.Item($Sheet)
 

but i am getting the following error