Powershell: How to pass variable correctly to command - powershell

Question

I apologize if I butchered the terminology for this, and understand I'm very new to PowerShell. I have read over some of the guides and this concept is clearly not getting through to me.
Concept:
I want to remove a mobile device from a user in Exchange 2010
Identify user from input
Create variable from input of the PhoneID
Remove the Phone using phoneID variable
I believe my problem is in how I'm passing this data to the next command. I know the appended "#[Identity " that get's added should be removed and I remember reading something about how when you pass data like this Powershell has no context? Here is my very simple script.
Script
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.E2010
. $env:ExchangeInstallPath\bin\RemoteExchange.ps1
Connect-ExchangeServer -auto
$PU = Read-Host "Enter Username"
$did = get-activesyncdevice -mailbox $PU | Select-Object identity
Remove-ActiveSyncDevice -Identity $did
Error
My error is as follows, and I've tried to research what I'm doing wrong but I'm just not getting it :-( , I replaced the actual output for the account with XX.
Remove-ActiveSyncDevice : Cannot bind parameter 'Identity'. Cannot convert value "#{Identity=XX" to type
"Microsoft.Exchange.Configuration.Tasks.ActiveSyncDeviceIdParameter". Error: "Cannot convert the "#{Identity=XX}" value of type
"Selected.Microsoft.Exchange.Data.Directory.SystemConfiguration.ActiveSyncDevice" to type "Microsoft.Exchange.Configuration.Tasks.ActiveSyncDeviceIdParameter"."
At line:1 char:35
+ Remove-ActiveSyncDevice -Identity $did
+ ~~~~
+ CategoryInfo : InvalidArgument: (:) [Remove-ActiveSyncDevice], ParameterBindingException
+ FullyQualifiedErrorId : CannotConvertArgumentNoMessage,Microsoft.Exchange.Management.Tasks.RemoveMobileDevice
Any help or advice on this would be amazing!

Answer 1

When you use Select-Object and give it just one property name, you get and object with just one property. But even though it only has one property, you still have to reference that one property by name:
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.E2010
. $env:ExchangeInstallPath\bin\RemoteExchange.ps1
Connect-ExchangeServer -auto
$PU = Read-Host "Enter Username"
$did = get-activesyncdevice -mailbox $PU | Select-Object identity
Remove-ActiveSyncDevice -Identity $did.identity