Remote mailbox creation help on powershell

HI, I am bit confused with the powershell commands and was not able to get the best answer for below. I created an csv file with one column called "userprincipalname" and added all the user ID's as 123@test.com.

The script that i used is 

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$csvfile= Import-Csv "C:\users.csv"

Foreach($user in $csvfile){
$userprincipalname = $_.userprincipalname
Enable-RemoteMailbox -Identity $userprincipalname@company.com -RemoteRoutingAddress $userprincipalname@company.mail.onmicrosoft.com

}

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Can anyone of powershell guru help to validate if I am using right one or need to make any changes?