I have created a package which pricing id is 1. I want to add this service under the client id 1. Below is my code:  
$api = new BlestaApi($url, $user, $key);
$data= array('vars'=>array('pricing_id'=>1,'client_id'=>1,'qty'=>1));				
$response = $api->post("Services", "add", $data);
print_r($response->response());
var_dump($response->errors());
 
second last line output blank. 
last line output bool(false). 
  
This code was working for me before flushing database. I flushed old data because of testing records.  
  
Please let me know what I am doing incorrect. 
  
Thanks in advance! 
  
-Anuranjan