Adding new values to an array nested within an object - windows

Question

I am trying to create an array of objects, and inside each object I want a property called something like "valid paths" indicating where those objects can be found, but I'm having trouble adding new paths after creating the array.
For example:
$Guids = $null
$Guids = #()
$Guids += [pscustomobject]#{
Guid = '{374DE290-123F-4565-9164-39C4925E467B}'
Paths = #()
}
$Guids += [pscustomobject]#{
Guid = '{7d83ee9b-2244-4e70-b1f5-5393042af1e4}'
Paths = #()
}
Here I am creating two objects indicating the guids I am looking for. Then to find and add the paths to the array, I do this:
$Rootpath = "HKU:\$($CurrentUser.PSChildName)"
$ShellFolderspath = "$RootPath\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
$UserShellFolderspath = "$Rootpath\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders"
#region 1 - Identify registry keys to update
New-PSDrive -Name HKU -PSProvider Registry -Root HKEY_USERS -ErrorAction SilentlyContinue
#Adding Downloads Guids to array
ForEach ($object in $Guids)
{
#Check Shell Folders Path
If ($Item = Get-ItemProperty $ShellFolderspath -Name $object.Guid -ErrorAction Stop)
{
"$($object.guid) found in Shell Folders path"
$Object.paths += $Item.PSpath
}
#Check User Shell Folders Path
If ($Item = Get-ItemProperty $UserShellFolderspath -Name $object.Guid -ErrorAction Stop)
{
"$($object.guid) found in User Shell Folders path"
$Object.paths += $Item.PSpath
}
}
I've googled over and over and can't find any examples of anyone trying to do this. Any help would be appreciated!