Powershell Scripting Issue : Folder Size Report

Experts,

Powershell scripting issue :

Function get-spaceusagereport($loc){

set-location $loc
$colItems = Get-ChildItem $loc | Where-Object {$_.PSIsContainer -eq $true} | Sort-Object
$colresults = @()
    foreach ($i in $colItems) {
        try {
            write-host "Processing .... $i"
            $subFolderItems = @()
            $subFolderItems = Get-ChildItem $i.FullName -recurse -force | Where-Object {$_.PSIsContainer -eq $false} | Measure-Object -property Length -sum | Select-Object Sum
            $object = ""|select Fullpath, SpaceUsed, rawspace
            $object.FullPath = $i.FullName
            $object.SpaceUsed = "{0:N2}" -f $($subfolderitems.sum / 1MB) + " MB"
            $object.rawspace = $($subfolderitems.sum / 1MB)
            $colresults += $object
        }
        catch {
            write-host "Could Not Access $i"
        }
    }

    #$object.Fullpath = $loc
    #$rootFolder = Get-ChildItem $($loc) -force | Where-Object {$_.PSIsContainer -eq $false} | Measure-Object -property Length -sum | Select-Object Sum
    #$object.spaceused = "{0:N2}" -f $($subfolderitems.sum / 1MB) + " MB"
    #$object.rawspace = $($subfolderitems.sum / 1MB)

    #$colresults += $object

write-host "The Top Space Using Folders are :"
$($colresults|sort-object rawspace -Descending|select -first 5)|select FullPath, SpaceUsed      
}

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Most of this code functions, however, I am running into an issue retrieving the rootlevel folder $loc 's size in the $colresults object.

Any chance someone can assist with this :

- Thanks