Parsing the First Initial in PowerShell for Office 365

I’m trying to add email aliases to a new Office 365 setup and I’m using the following script to add firstname.surname:
 
$users1 = Get-Recipient -ResultSize Unlimited| Where {$_.Department -Match “megacorpeurope”}
foreach ($c in $users1) {$c.emailaddresses.Add(“smtp:$($c.FirstName+”.”+$c.LastName)@megacorpeurope.com”)}
$users1 | %{Set-Mailbox $_.Identity -EmailAddresses $_.EmailAddresses}
 
What I also need to add is firstinital.surname@ and firstinitialsurname@, can anyone tell me how I can parse these?  Exchange 2013 says you can use %1g, but I can’t that to work in the above script, I get:
 
Missing property name after reference operator.
    + CategoryInfo          : ParserError: (:) [], ParseException
    + FullyQualifiedErrorId : MissingPropertyName
 
Can anyone help?
 
Thanks
 
Nick
klaus1013Asked:
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Vasil Michev (MVP)Commented:
$c.FirstName[0] will return the initial.
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