// Get master object data
Map masterData = master["containerDocument"] as Map
// Get account ID, other fields refer to corresponding object
String accountId = masterData["account_id"] as String
log.info("account_id:"+accountId)

def ret = Fx.object.find("PaymentObj", // Query customer object
             FQLAttribute.builder()
                .columns(["_id"]) // Return data ID
                .queryTemplate(QueryTemplate.AND(["account_id": QueryOperator.EQ(accountId)]))
                .build(),
             SelectAttribute.builder().build()).result() as QueryResult
log.info(ret)

return ret