Azure Automation DSC - When using Start-AzAutomationDscCompilationJob param cred

I have imported a DSC script successfully that has one parameter Credential. When I try and run the compilation to create a mof file (Start-AzAutomationDscCompilationJob), I don’t know how to -parameter parameter to use this credential. I created and tested the script and mof on the VM I am trying to apply it to and it works. If I use Import-AzAutomationDscNodeConfiguration to upload the mof file, it works. I just want to know how to use Start-AzAutomationDscCompilationJob with a parameter of credential. I need the credential for logging into a sql db on an application server.

[pre]
$pwss = (ConvertTo-SecureString $pw -AsPlainText -Force)
$creds = New-Object System.Management.Automation.PSCredential($username, $pwss)
$Parmeters = @{“Credential”= $creds}
$stCfComParams = @{
ConfigurationName = $ConfigurationName
Parameters = $Parmeters
ConfigurationData = $cfgData
ResourceGroupName = $ResourceGroupName
AutomationAccountName = $AAAName
}

$CompilationJob = Start-AzAutomationDscCompilationJob @stCfComParams

Configuration DSC_Deploy
{

param
(
    [Parameter()]
    [ValidateNotNull()]
    [PSCredential]$Credential
)

$CredUser = $Credential.UserName
$CredPass = $Credential.GetNetworkCredential().Password

Import-DscResource -ModuleName 'PSDesiredStateConfiguration'

Node $AllNodes.Where{$_.Property -eq "Yes"}.NodeName
{
    Script ScriptDBBackup
    {
        SetScript = {

$query_backup = @’
SELECT

'@
$backupList = Invoke-Sqlcmd -Database $BcsDbName -Username $Using:CredUser -Password $Using:CredPass -Query $query_backup
}
TestScript = {

            if (  -not [string]::IsNullOrEmpty($TasksServiceName) ) {
            $ServObj = Get-Service -Name $TasksServiceName
                if ( $ServObj.Status -eq 'Stopped' ) {
                    Write-Verbose -Message "The service $TasksServiceName has stopped."
                    return $false
                    ##########  AFTER TESING CHANGE TO FALSE
                }else {
                    Write-Verbose -Message 'Service $TasksServiceName is not stopped.'
                    $ServObj | Stop-Service -PassThru | foreach {
                        if ( $_.Status -eq 'stopped' ) { 
                            Write-Verbose -Message "The service $TasksServiceName has stopped."
                            return $false
                        } else {
                            Write-Verbose -Message 'Service not stopped.'
                            return $true
                        }
                    }
                }
            }else {
                Write-Verbose -Message 'The variables not populated.'
                return $true
            }
        }
        GetScript = {
        }
    }
}

}

$username = ‘anadm8in’
$pw = ‘@password123
$pwss = (ConvertTo-SecureString $pw -AsPlainText -Force)
$creds = New-Object System.Management.Automation.PSCredential($username, $pwss)
DSC_Deploy -Credential $creds -ConfigurationData $cfgData -OutputPath $outP
[/pre]

Anyone?