Powershell to create list views

Hi everyone,

So I am attempting to create a new view for a particular list in a large group of sub sites.   I’ve got it to work, as written below, I am just missing how to add the grouping.   I want to group the list items by business unit, then by subcategory.   Can’t seem to get the syntax right.  

#Get destination site and list
$web = Get-SPWeb http://mysharepoint.com/site
$list = $web.GetList(($web.ServerRelativeURL.TrimEnd(“/”) + “/ListName”))

$viewTitle = “Business Unit Grouped” #Title property
#Add the column names from the ViewField property to a string collection
$viewFields = New-Object System.Collections.Specialized.StringCollection
$viewFields.Add(“DocIcon”) > $null
$viewFields.Add(“LinkFilename”) > $null
$viewFields.Add(“Business Unit”) > $null
$viewFields.Add(“Subcategory”) > $null
$viewFields.Add(“Modified”) > $null
$viewFields.Add(“Editor”) > $null
#Query property
$viewQuery = “<OrderBy><FieldRef Name=’Modified’ Ascending=’FALSE’/></OrderBy>”
#RowLimit property
$viewRowLimit = 50
#Paged property
$viewPaged = $true
#DefaultView property
$viewDefaultView = $false

#Create the view in the destination list
$newview = $list.Views.Add($viewTitle, $viewFields, $viewQuery, $viewRowLimit, $viewPaged, $viewDefaultView)
Write-Host (“View ‘” + $newview.Title + “‘ created in list ‘” + $list.Title + “‘ on site ” + $web.Url)
$web.Dispose()