Looping Through All Calendars With Get-MailboxFolderPermission - powershell

Question

I have researched this extensively and used much trial-and-error, but I have yet to get a scrip to work that performs the function I want it to. What I want is to create a script that will allow the user to type a username, and then run through all the mailboxes and show the user's permissions on those user's calendars. I've gotten very close with the below script, but this only works on the mailbox as a whole, and does not work if I simply add ":\Calendar" to the $Box variable. Any input on how to get this to show the calendar permissions would be welcome.
$Username = Read-Host "Enter the user whose access you would like to view"
foreach ($Box in Get-Mailbox) {
Get-MailboxFolderPermission -Identity $Box -User $Username
}
I know this is a repeat of a previous question, but as I've altered my code significantly, I thought it was worth asking again. Here's the link to my prior question:
Exchange Powershell: Get-MailboxFolderPermission for all calendars
Thanks for any help!

Answer 1

You could refer to the below code:
(Get-Mailbox) | ForEach-Object {
Get-Mailboxfolderpermission (($_.PrimarySmtpAddress)+":\calendar") `
-User happyboy -ErrorAction SilentlyContinue
} | Select-Object Identity, User, Accessrights
For more information, please refer to this link:
Display all mailbox calendars which a user has access to

Answer 2

Using the suggestion by #Alina-Li, I was able to work out the following code. Everything works well now:
(Get-Mailbox) | ForEach-Object {
$Permission = Get-Mailboxfolderpermission ($_.PrimarySMTPAddress.Local + "#" + $_.PrimarySMTPAddress.Domain +":\calendar") `
-User $User -ErrorAction SilentlyContinue | Select-Object -ExpandProperty Accessrights
if ($Permission -ne $null) {
echo ("Calendar: "+($_.Name))
echo ($User+"'s Permission: "+$Permission)
echo ""
}
}