Powershell - Get-mailbox what's wrong in this statement?

$Item.Code_Site = "LO"

$JCAlias = (Get-Mailbox -RecipientTypeDetails sharedmailbox | Where-object {($_.CustomAttribute1 -eq $Item.Code_Site)}.Alias)

ERROR : The property Alias cannot be found on this object. Verify that the property exist....

Get-Mailbox has a property called alias..

so something is wrong in my statement.....

PS I I remove .alias  I get the name of the mailbox

$JC = Get-Mailbox -RecipientTypeDetails sharedmailbox | Where-object {($_.CustomAttribute1 -eq $Item.Code_Site)}

BUT this is not what I need....
François VDCIcT service DeskAsked:
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The closing round bracket is not at the correct position; it needs to be right before the dot.
$JCAlias = (Get-Mailbox -RecipientTypeDetails sharedmailbox | Where-object {($_.CustomAttribute1 -eq $Item.Code_Site)}).Alias

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Jeremy WeisingerSenior Network Consultant / EngineerCommented:
Your syntax is off a bit. Try this:
$Item.Code_Site = "LO"

$JCAlias = (Get-Mailbox -RecipientTypeDetails sharedmailbox | Where-object {($_.CustomAttribute1 -eq $Item.Code_Site)} | Select -ExpandProperty Alias)

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Suggest a split. Both are valid solutions, just two ways to achieve the same thing.
Jeremy WeisingerSenior Network Consultant / EngineerCommented:
Both valid.
I should also clarify that the original question had the wrong syntax. oBdA’s syntax is, of corse, correct.
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