diff -r 21eb91dc7071 -r 14dfb786c53e etherlab/etherlab.py
--- a/etherlab/etherlab.py	Wed Sep 19 03:30:58 2012 +0200
+++ b/etherlab/etherlab.py	Wed Sep 19 11:03:25 2012 +0200
@@ -133,13 +133,12 @@
             self.CTNParent.SetSlaveAlias(position, value)
             return value, True
         
-        value, changed = ConfigTreeNode.SetParamsAttribute(self, path, value)
         # Filter IEC_Channel, Slave_Type and Alias that have specific behavior
         if path == "BaseParams.IEC_Channel":
             self.CTNParent.SetSlavePosition(position, value)
         
-        return value, changed
-
+        return ConfigTreeNode.SetParamsAttribute(self, path, value)
+    
     def GetSlaveInfos(self):
         return self.CTNParent.GetSlaveInfos(self.GetSlavePos())