New-Smbshare throws error when working with UNC path - powershell

Question

I'm trying to write a script where I can create home folders for users on a primary domain controller or on all domain controllers for later DFS configuration. Script works like a charm when I write directly to A:$homeFolder. But in order to write to backup domain controllers I have to use the format \DC01.carpal.local\A$\homeFolder, and it throws an error that the syntax isn't correct. Creating the folder works, sharing doesn't. Error and code below
function Set-HomeFolder
{
$fqdn = Get-ADDomain | Select -ExpandProperty ReplicaDirectoryServers
$fqdn[0]
function Set-HomePDC
{
Get-HomeShareInfo
$PBCPath = '\\'+$fqdn[0]+'\'+$global:FolderVol+'\' ## \\dc01.carpal.local\A$\homeFolder\ ##
New-Item -Path $PBCPath -Name $global:homeFolder -ItemType "directory"
$company = Read-Host "Create home folders for users from company" ## Root OU where users reside ##
Write-Host $PBCPath$global:homeFolder
New-SmbShare -Name $global:shareName -Path $PBCPath$global:homeFolder -FullAccess ("Administrator") -ChangeAccess ("DL_$company")
$userRoot = '\\'+$fqdn[0]+'\'+$global:homeFolder+'\'
$homeDrive = Read-Host "Enter the name of the drive letter"
$homeDrive = $homeDrive + ":"
$samName = Get-ADUser -Filter * -SearchBase "OU=Users,OU=$company,$global:ou" | Select -ExpandProperty SamAccountName
foreach ($name in $samName)
{
$homeDirectory = $userRoot + $name ## \\DC01.carpal.local\Home\Ben001
Set-ADUser $name –HomeDrive $homeDrive –HomeDirectory $homeDirectory
New-Item –path "$global:FolderVol$homeFolder" -Name $name -type directory -force
$acl = Get-Acl $homeDirectory
$acl.SetAccessRuleProtection($True, $False)
$rule = New-Object System.Security.AccessControl.FileSystemAccessRule($name,"FullControl", "ContainerInherit, ObjectInherit", "None", "Allow")
$acl.AddAccessRule($rule)
$rule = New-Object System.Security.AccessControl.FileSystemAccessRule("Administrators","FullControl", "ContainerInherit, ObjectInherit", "None", "Allow")
$acl.AddAccessRule($rule)
Set-Acl $homeDirectory $acl
}
}
function Set-HomeAllDC
{
Get-HomeShareInfo
}
if ($fqdn.GetType().BaseType.Name -eq "Array")
{
echo "`n"
Write-Host " !! Replica Domain Controllers detected !!" -ForegroundColor Red
echo "`n"
Start-Sleep -s 1
Write-Host "Configure home folders on all Domain Controllers [1]"
Write-Host "Configure home folders only on Primary Domain Controller [2]"
echo "`n"
$answer = Read-Host "Please select an option"
if ($answer -eq 1)
{
Set-HomeAllDC
}
if ($answer -eq 2)
{
Set-HomePDC
}
elseif ($answer -ge 2 -or $answer -eq "")
{
echo "`n"
Write-Host "Please provide a value between 1 and 2" -ForegroundColor Red
Start-Sleep -s 1
}
}
else
{
Set-PDCHome
}
}
function Get-HomeShareInfo
{
[System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms")
$foldername = New-Object System.Windows.Forms.FolderBrowserDialog
$foldername.rootfolder = "MyComputer"
if($foldername.ShowDialog() -eq "OK")
{
$volume = $foldername.SelectedPath ## A:\
$global:FolderVol = $volume.Replace(':\','$')
}
$global:homeFolder = Read-Host "Enter the name of your home folder"
$global:shareName = Read-Host "Enter the share name"
}
Set-HomeFolder