diff --git a/db_functions.php b/db_functions.php
index 793cf3b..6fcee31 100644
--- a/db_functions.php
+++ b/db_functions.php
@@ -138,7 +138,7 @@ function iterateDevice($topic, $fn, &$device, $payloadArray)
 	//echo "device =>";print_r($device);echo EOL;
 	foreach($payloadArray as $key => $value)
 	{
-		$oldValue = 0;
+		$oldValue = null;
 		//echo "key =>"; print_r($key); echo EOL;
 		//echo "value =>"; print_r($value); echo EOL;
 
@@ -170,7 +170,7 @@ function iterateDevice($topic, $fn, &$device, $payloadArray)
 					$device->{$key}["value"] = null;
 					$device->$key["functions"] = array();
 				}
-				if ($oldValue != $value)
+				if ($oldValue !== $value)
 				{
 					$device->$key["value"] = $value;
 					$changed[$fn]["key"] = $key;
diff --git a/moha.php b/moha.php
index 3df2be7..06da86f 100644
--- a/moha.php
+++ b/moha.php
@@ -31,10 +31,13 @@ $dbInit = false;				// flag to indicate that desvices db is initialized
 $connected = false;				// connected to MQTT server
 $included = false;				// flag indicate scripts are loaded
 $nSubscribed = 0;				// Number of topics subsribed
+$logFile = "/var/log/moha.log";	// Path of log file
 $logFh = null;					// filehandle of log file
 $curlErr = 0;					// Number of errors returned by curl
 $configDir = "./config";		// default config dir (production value is /etc/moha/)
 
+if (!init()) exit(1);
+
 function logger($level, $log, $notif = true)
 {
 	global $logFh, $logLevel, $notificationLevel;
@@ -55,9 +58,7 @@ function logger($level, $log, $notif = true)
 		}
 	}
 }
-
-
-// topics definition
+/*
 logger(DEBUG, _("Require topics definition -> zigbee3mqtt"), false);
 $topics["zigbee2mqtt"] = new topic;
 require "topics_callbacks/zigbee2mqtt.php";
@@ -65,14 +66,14 @@ require "topics_callbacks/zigbee2mqtt.php";
 logger(DEBUG, _("Require topics definition -> pws2mqtt"), false);
 $topics["pws2mqtt"] = new topic;
 require "topics_callbacks/pws2mqtt.php";
-
+*/
 logger(DEBUG, _("gettext init"), false);
 // gettext
 bindtextdomain("moha", "./locale");
 textdomain("moha");
 
 logger(DEBUG, _("lauching init function"), false);
-if (!init()) exit(1);
+
 
 logger(DEBUG, _('assigning variable : $client'), false);
 $client = new Mosquitto\Client();
@@ -94,7 +95,16 @@ require "mqtt_functions.php";
 require "events.php";
 require "db_functions.php";
 
-
+// topics definition
+loadHooks("./topics_callbacks", $hooksList);
+if (!empty($hooksList))
+{
+	foreach ($hooksList as $callback)
+	{
+		logger(INFO, _("Including ") . $callback, false);
+		include $callback;
+	}
+}
 
 logger(DEBUG, _("requiring config files -> devices_constants.php"), false);
 //include predefined file witch define constants for devices
@@ -177,10 +187,10 @@ endMoha();
 
 function init()
 {
-	global $logFh, $client;
+	global $logFile, $logFh, $client;
 	date_default_timezone_set('Europe/Paris');
 
-	if (! $logFh = fopen("moha.log", "w") )
+	if (! $logFh = fopen($logFile, "w") )
 	{
 		echo _("error opening log file");
 		return false;
@@ -197,7 +207,6 @@ function loadHooks($dir, &$hookList)
 	foreach ($files as $file)
 	{
 		//echo "=====> $file" . EOL;
-
 		if ($file != "." and $file != "..")
 		{
 			//echo "not . or .." . EOL;echo strpos($file, ".php", -4) . EOL;
@@ -208,7 +217,10 @@ function loadHooks($dir, &$hookList)
 			}elseif (strpos($file, ".php", -4) !== false)
 			{
 				//echo "file : " . $dir . "/" . $file . EOL;
-				$hookList[] = $dir . "/" . $file;
+				if (substr($file, -4) == ".php")
+				{
+					$hookList[] = $dir . "/" . $file;
+				}
 			}
 		}
 	}
diff --git a/mqtt_functions.php b/mqtt_functions.php
index 1a8e6d6..515957e 100644
--- a/mqtt_functions.php
+++ b/mqtt_functions.php
@@ -4,6 +4,9 @@ function messageReceived($message)
 {
 	global $topics, $logFh, $devices, $included;
 	$topic = explode ("/", $message->topic);
+	$callback = $topics[$topic[0]]->callback;
+	$callback($topic, $message);
+	/*
 	if ($topic[1] == "bridge")
 	{
 		switch ($topic[2])
@@ -65,7 +68,7 @@ function messageReceived($message)
 		}
 		changeDevice($topic[0], $topic[1], $device["device"], $payloadArray);
 		//fwrite($logFh, print_r($msg, true));
-	}
+	}*/
 }
 
 // payload is an array :
diff --git a/topics_callbacks/pws2mqtt.php b/topics_callbacks/pws2mqtt.php
index 355ec68..8a0e81b 100644
--- a/topics_callbacks/pws2mqtt.php
+++ b/topics_callbacks/pws2mqtt.php
@@ -1,8 +1,28 @@
 <?php
+$topics["pws2mqtt"] = new topic;
 
-$topics["pws2mqtt"]->callback = function()
+$topics["pws2mqtt"]->callback = function($topic, $message)
 {
 	global $topics, $logFh, $devices, $included;
-
+	$topic = explode ("/", $message->topic, 2);   	// get topic name
+	$fnTree = explode ("/" , $topic[1]); 			// get friendlyname
+	echo $topic[0] . " => " . $topic[1] . EOL;
+	$device = & $devices[$topic[0]];
+	foreach($fnTree as $fn)
+	{
+		//print_r($device) ;
+		if (!isset($device[$fn]))			//must not exists, but ...
+		{
+			logger(LOG_WARNING, $logFh, "init of " . $fn .EOL);
+			$device[$fn] = array();
+			$device[$fn]["device"] = new device;
+			//addDevice($device[$fn], $fn, );
+		}
+		$device = & $device[$fn];
+		print_r($device);
+	}
+	$payloadArray = json_decode($message->payload);
+	changeDevice($topic[0], $topic[1], $device["device"], $payloadArray);
+	print_r($device["device"]);
 }
 ?>
diff --git a/topics_callbacks/zigbee2mqtt.php b/topics_callbacks/zigbee2mqtt.php
index 49b4e8e..f38a029 100644
--- a/topics_callbacks/zigbee2mqtt.php
+++ b/topics_callbacks/zigbee2mqtt.php
@@ -1,5 +1,6 @@
 <?php
-$topics["zigbee2mqtt"]->callback = function()
+
+$callback = function($topic, $message)
 {
 	global $topics, $logFh, $devices, $included;
 	if ($topic[1] == "bridge")
@@ -64,5 +65,8 @@ $topics["zigbee2mqtt"]->callback = function()
 		changeDevice($topic[0], $topic[1], $device["device"], $payloadArray);
 		//fwrite($logFh, print_r($msg, true));
 	}
-}
+};
+
+$topics["zigbee2mqtt"] = new topic;
+$topics["zigbee2mqtt"]->callback = & $callback;
 ?>