Commissions payment_id email tag

function pj_eddc_add_payment_id_email_template_tag( $message, $user_id, $commission_amount, $rate, $download_id, $commission_id ){

	//Get the payment Id

	$payment_id = get_post_meta( $commission_id, '_edd_commission_payment_id', true );

	$message = str_replace( '{payment_id}', $payment_id, $message );

	return $message;

}

add_filter( 'eddc_sale_alert_email', 'pj_eddc_add_payment_id_email_template_tag', 10, 6 );