How to write SCOM parameters in Application event log description

Hi All,

I have this following command:

$MM = Get-SCOMClass –Name Microsoft.Windows.Computer | Get-SCOMClassInstance
| where-object {$_.InMaintenanceMode -eq $true}| Select DisplayName

EventCreate /l Information /ID 123 /L application /D "There are object in Maintenance Mode:" $MM

I will appreciate any advice you may have.

TechNet