How to create bulk user ids in the FIM 2010 using powershell

i have the below powershell script but which will create only one user at time in the FIM. Can somebody help me with powershell scripit which will help us to create a bulk users .

#----------------------------------------------------------------------------------------------------------
 set-variable -name URI -value "http://localhost:5725/resourcemanagementservice'" -option constant
#----------------------------------------------------------------------------------------------------------
 function SetAttribute
 {
    PARAM($object, $attributeName, $attributeValue)
    END
    {
        $importChange = New-Object Microsoft.ResourceManagement.Automation.ObjectModel.ImportChange
        $importChange.Operation = 1
        $importChange.AttributeName = $attributeName
        $importChange.AttributeValue = $attributeValue
        $importChange.FullyResolved = 1
        $importChange.Locale = "Invariant"
        if ($object.Changes -eq $null) {$object.Changes = (,$importChange)}
        else {$object.Changes += $importChange}
    }
}
#----------------------------------------------------------------------------------------------------------
 function CreateObject
 {
    PARAM($objectType)
    END
    {
       $newObject = New-Object Microsoft.ResourceManagement.Automation.ObjectModel.ImportObject
       $newObject.ObjectType = $objectType
       $newObject.SourceObjectIdentifier = [System.Guid]::NewGuid().ToString()
       $newObject
     }
 }
#----------------------------------------------------------------------------------------------------------
 if(@(get-pssnapin | where-object {$_.Name -eq "FIMAutomation"} ).count -eq 0) {add-pssnapin FIMAutomation}
 clear-host

 if($args.count -ne 1) {throw "You need to specify your attribute values as parameter"}
 $attributes = ($args[0]).split("|")

 if(0 -ne [String]::Compare(($attributes[0]).split(":")[0],"displayname", $true))
 {throw "You need to specify a display name"}

 $objectName = ($attributes[0]).split(":")[1]
 $exportObject = export-fimconfig -uri $URI `
                                  –onlyBaseResources `
                                  -customconfig "/Person[DisplayName='$objectName']"
 if($exportObject) {throw "L:User $objectName already exists"}

 $newUser = CreateObject -objectType "Person"
 foreach($attribute in $attributes)
 {
    $attrData = $attribute.split(":")
    SetAttribute -object $newUser `
                 -attributeName  $($attrData[0]) `
                 -attributeValue $($attrData[1])
 }             

 $newUser | Import-FIMConfig -uri $URI
 write-host "`nUser created successfully`n"
#----------------------------------------------------------------------------------------------------------
 trap
 {
    $exMessage = $_.Exception.Message
    if($exMessage.StartsWith("L:"))
    {write-host "`n" $exMessage.substring(2) "`n" -foregroundcolor white -backgroundcolor darkblue}
    else {write-host "`nError: " $exMessage "`n" -foregroundcolor white -backgroundcolor darkred}
    Exit
 }
#----------------------------------------------------------------------------------------------------------