Index: curl_helper.php
===================================================================
--- curl_helper.php	(revision 13805)
+++ curl_helper.php	(working copy)
@@ -174,6 +174,8 @@
 		function SetPostData($post_data)
 		{
 			if (is_array($post_data)) {
+				$post_data = $this->Application->HttpQuery->_transformArrays($post_data); // NEW
+
 				$params_str = '';
 				foreach ($post_data as $key => $value) {
 					$params_str .= $key.'='.urlencode($value).'&';