Billz curl req add progress func2

vendor/alovoice/src/BillzRest.php

@@ -202,7 +202,7 @@ require_once (__DIR__.'/keys.php');
 					  CURLOPT_SSL_VERIFYPEER =>false,
 					  CURLOPT_SSL_VERIFYHOST =>false,
 					  CURLOPT_NOPROGRESS => false ,
-					  CURLOPT_PROGRESSFUNCTION => array($this, 'curlprogress'),
+					  CURLOPT_PROGRESSFUNCTION => array("BillzRest", 'curlprogress'),
 					  CURLOPT_HTTPHEADER => array(
 						'Authorization: Bearer '.$arSettings["token"],
 						'Content-Type: application/json'
@@ -271,7 +271,7 @@ require_once (__DIR__.'/keys.php');
 			
 		}
 		
-		public function curlprogress($resource,$download_size, $downloaded, $upload_size, $uploaded){
+		public static function curlprogress($resource,$download_size, $downloaded, $upload_size, $uploaded){
 			if($download_size > 0)
 				// echo $downloaded / $download_size  * 100;
 				$percDwn = $downloaded / $download_size  * 100;