Hook not working

[Bidi]

Hy there cand someone help me why is this one not working ? from admin area if i use Create Add Funds Invoice it works but it ads the amount to the customer directly

 

<?php 

function hook_smsinvoicecreated($vars)
{
   $invoiceid = $vars['invoiceid'];
   include("../rwsfunctions.php");
   include("../rwsconfig.php");
   $rid = full_query("SELECT userid,duedate,total FROM tblinvoices WHERE id='".$invoiceid."'");
   $did = mysql_fetch_array($rid);
   $clientid = $did['userid'];
   $rcr = full_query("SELECT credit,smsphone,smsinvoicecreated FROM tblclients WHERE id = '".$clientid."'");
   $dcr = mysql_fetch_array($rcr);
   if ($dcr['smsinvoicecreated'] == "1" && "0.05" <= $dcr['credit'])
   {
       $phone = $dcr['smsphone'];
       $dd = $did['duedate'];
       $d = explode("-", $dd);
       $duedate = $d['2']." ".$d['1']." ".$d['0'];
       $total = $did['total'];
       $message = "Va informam ca a fost emisa in contul dvs o noua factura cu nr: ".$invoiceid.", total ".$total." Euro, data scadenta ".$duedate.". ".$brand;
       if (strlen($phone) == "10")
       {
           $command = "addcredit";
           $adminuser = $adminuser;
           $values['clientid'] = $clientid;
           $values['description'] = "Trimitere SMS catre ".$phone;
           $values['amount'] = 0 - $amountinvoicecreated;
           $results = localAPI($command,$values,$adminuser);

           if ($results['result'] == "success")
           {
               sendsms($sid, $password, $phone, $message);
           }
           else
           {
               $res = $results['message'];
           }
       }
       else
       {
           $res = "Telefon Invalid";
       }
   }
}

add_hook("InvoiceCreated", 2, "hook_smsinvoicecreated");
?>