diff --git a/backend.py b/backend.py
index 98c8c0cec3f3b40308fd971ff4c63c08f7ae0dda..af024e2beb180a998c0fb4547659a3627a3fe21d 100644
--- a/backend.py
+++ b/backend.py
@@ -305,7 +305,7 @@ class Backend():
         self.network.start()
         print "Z-Wave Network Starting..."
         for i in range(0, 300):
-            if self.network.state == self.network.STATE_READY:
+            if self.network.is_ready:
                 break
             else:
                 time.sleep(1.0)
@@ -320,7 +320,7 @@ class Backend():
 	# this method stops the software representation
 
         global started
-	started = False
+        started = False
         print "Stopping Z-Wave Network... "
         self.network.stop()
         
@@ -401,7 +401,7 @@ class Backend():
 
     def allMeasures(self, n):
         for node in self.network.nodes.itervalues():
-            if node.node_id == n and node.isReady and n != 1 and "timestamp"+str(node.node_id) in self.timestamps:
+            if node.node_id == n and node.isReady and n != 1 :
                 values = node.get_values("All", "User", "All", True, False)
                 if len(node.location) < 3:
                     node.location = configpi.sensors[str(node.node_id)][:4]
@@ -426,7 +426,7 @@ class Backend():
 
     def temperature(self, n):
         for node in self.network.nodes.itervalues():
-            if node.node_id == n and node.isReady and n != 1 and "timestamp"+str(node.node_id) in self.timestamps:
+            if node.node_id == n and node.isReady and n != 1 :
                 values = node.get_values(0x31, "User", "All", True, False)
                 for value in values.itervalues():
                     if value.label == "Temperature":
@@ -438,7 +438,7 @@ class Backend():
 
     def humidity(self, n):
         for node in self.network.nodes.itervalues():
-            if node.node_id == n and node.isReady and n != 1 and "timestamp"+str(node.node_id) in self.timestamps:
+            if node.node_id == n and node.isReady and n != 1 :
                 values = node.get_values(0x31, "User", "All", True, False)
                 for value in values.itervalues():
                     if value.label == "Relative Humidity":
@@ -450,7 +450,7 @@ class Backend():
 
     def luminance(self, n):
         for node in self.network.nodes.itervalues():
-            if node.node_id == n and node.isReady and n != 1 and "timestamp"+str(node.node_id) in self.timestamps:
+            if node.node_id == n and node.isReady and n != 1 :
                 values = node.get_values(0x31, "User", "All", True, False)
                 for value in values.itervalues():
                     if value.label == "Luminance":
@@ -462,7 +462,7 @@ class Backend():
 
     def motion(self, n):
         for node in self.network.nodes.itervalues():
-            if node.node_id == n and node.isReady and n != 1 and "timestamp"+str(node.node_id) in self.timestamps:
+            if node.node_id == n and node.isReady and n != 1 :
                 values = node.get_values(0x30, "User", "All", True, False)
                 for value in values.itervalues():
                     if value.label == "Sensor":
@@ -474,7 +474,7 @@ class Backend():
 
     def battery(self, n):
         for node in self.network.nodes.itervalues():
-            if node.node_id == n and node.isReady and n != 1 and "timestamp"+str(node.node_id) in self.timestamps:
+            if node.node_id == n and node.isReady and n != 1 :
                 val = node.get_battery_level()
                 return jsonify(controller = name, sensor = node.node_id, location = node.location, type = "battery", updateTime = self.timestamps["timestamp"+str(node.node_id)], value = val)
         return "Node not ready or wrong sensor node !"