Getting Monitor State Change Events via PowerShell

#Set arrays to empty
$Monitor = @()
$MonitorColl = @()
$States = @()

#Get Web Transaction URL Class
$URLClass = Get-SCOMClass -Name 'Microsoft.SystemCenter.WebApplication.Perspective'
#Get an array of matching specific instances of URL Class
$URLInstances = $URLClass | Get-SCOMClassInstance | where {$_.displayname -eq "Bing URL Transaction"}

#Loop through each URL instance
ForEach ($UrlTest in $URLInstances)
{
    #Set the monitor collection to empty and create the collection to contain monitors
    $MonitorColl = @()
    $MonitorColl = New-Object "System.Collections.Generic.List[Microsoft.EnterpriseManagement.Configuration.ManagementPackMonitor]"

    #Get specific monitors matching a displayname for this instance of URLtest ONLY
    $Monitor = Get-SCOMMonitor -Instance $UrlTest -Recurse | where {$_.DisplayName -eq "Content Match"}

    #Add this monitor to a collection
    $MonitorColl.Add($Monitor)

    #Get the state associated with this specific monitor
    $State=$UrlTest.getmonitoringstates($MonitorColl)

    #Add each state found in the loop to an array to be used later
    $States += $State
}

#get any statechangeevents for each item in the array
$States[0].getmonitoringstatechangeevents()
$States[1].getmonitoringstatechangeevents()