start with optimasation

src/main/java/mdd/client/Processor.java

@@ -189,6 +189,7 @@ public class Processor extends Module{
                     //TODO update prefix
                     int lsize = ((JSONArray)jin.get("prefix")).size()-1;
                     Module min = getModule(((JSONArray)jin.get("prefix")).get(lsize).toString());
+                    lsize = ((JSONArray)jout.get("prefix")).size()-1;
                     Module mout = getModule(((JSONArray)jout.get("prefix")).get(lsize).toString());
                     Input in = min.getInput(jin.get("key").toString()+jin.get("appendix").toString());
                     Output out = mout.getOutput(jout.get("key").toString()+jout.get("appendix").toString());