MIM WAL XOML update for new no-language mode for Exchange

[swaindn72]

How can this WAL workflow be updated for Exchange no-language mode ?
Param([string]$samaccountname)
$DebugPreference='Continue'
$PSSession = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri http://FQDN/PowerShell/ -Authentication Kerberos

$enablemailbox = Invoke-Command -Session $PSSession -ArgumentList $samaccountname {$samaccountname=$args[0];enable-mailbox -Identity $samaccountname}
return "Success"$

[swaindn72]

Starting point is at the PoSh CMD and get something that works - which is:
Invoke-Command -Session $PSSession -ScriptBlock {enable-mailbox -Identity sAMAccountName}
Adding -ScriptBlock send the script to the server vs running local from MIM service server and provided one specific account to use
Now to get the work flow to use this context as the WF wants to feed parameters that must now be sent to the Exchange server where the script is now running.

[swaindn72]

$enablemailbox = Invoke-Command -Session $PSSession -ScriptBlock { param($userid) enable-mailbox -Identity $userid } -ArgumentList $samaccountname
this worked within the workflow PowerShell section and does assign Exch 2016 mailboxes
So this specific question is completed
The next few steps send e-mails and when the MIM Service config points to Exch 2016 all e-mails fail
So must now look at the mechanism used to send e-mails via Exch as now auth is required and need to wrap in kerberos some how