diff --git a/bridges/GooglePlusPostBridge.php b/bridges/GooglePlusPostBridge.php
index 62414b5..8e7b228 100644
--- a/bridges/GooglePlusPostBridge.php
+++ b/bridges/GooglePlusPostBridge.php
@@ -20,6 +20,7 @@ class GooglePlusPostBridge extends BridgeAbstract
 
 	public function collectData()
 	{
+		$param=$this->parameters[$queriedContext];
 		if (!isset($param['username']['value']))
 		{
 			$this->returnClientError('You must specify a username (?username=...).');