diff --git a/src/main/jastadd/base/io/IoPN.jadd b/src/main/jastadd/base/io/IoPN.jadd
index 57dd7b14a2e2375593f76bd3c11b82e3610bb371..7c76a0092b6aa6da491dfe4ee4e0564a80070e13 100644
--- a/src/main/jastadd/base/io/IoPN.jadd
+++ b/src/main/jastadd/base/io/IoPN.jadd
@@ -40,7 +40,7 @@ aspect IoPnExtension{
         }
 
         // updates automatically based on dependencies to the corresponding place
-        syn String OutputSignalBinding.getOutputSignalValue(){
+        syn String OutputSignalBinding.outputSignalValue(){
 
             OutputSignalPlace osp = this.containingPlace().asOutputSignalPlace();
             BalloonMarking marking = osp.balloonMarking();
@@ -142,4 +142,4 @@ aspect IoPnExtension{
 
             return output;
         }
-}
\ No newline at end of file
+}
diff --git a/src/main/jastadd/base/io/IoPN.relast b/src/main/jastadd/base/io/IoPN.relast
index 2bcffecd6bc3fdf4b755c018bef25aa285f21332..d7095dab2a5b4ab75bb4a0209c28397efe937278 100644
--- a/src/main/jastadd/base/io/IoPN.relast
+++ b/src/main/jastadd/base/io/IoPN.relast
@@ -1,5 +1,5 @@
 InputSignalBinding : PnObject ::= <TransitionID:String> <InputSignalID:String> <InputSignalValue:int>;
-OutputSignalBinding : PnObject ::= <PlaceID:String> <OutputSignalID:String> /<OutputSignalValue:String>/ EqualityOM:EqualityOutputMapping* ThresholdOM:ThresholdOutputMapping* RangeOM:RangeOutputMapping*;
+OutputSignalBinding : PnObject ::= <PlaceID:String> <OutputSignalID:String> EqualityOM:EqualityOutputMapping* ThresholdOM:ThresholdOutputMapping* RangeOM:RangeOutputMapping*;
 
 abstract TransitionInformation ::= <Location:String> <Type:String> <InputLimit:java.lang.Integer> <OutputLimit:java.lang.Integer> <SubNet:String> <Instance:String>;
 TopicTransitionInformation : TransitionInformation ::= <Topic:String>;
@@ -15,4 +15,4 @@ OutputMapping;
 
 EqualityOutputMapping : OutputMapping ::= <Value:java.lang.Integer> <Result:java.lang.Integer>;
 ThresholdOutputMapping : OutputMapping ::= <Value:java.lang.Integer> <Result:java.lang.Integer>;
-RangeOutputMapping : OutputMapping ::= <UpperBound:java.lang.Integer> <LowerBound:java.lang.Integer> <Result:java.lang.Integer>;
\ No newline at end of file
+RangeOutputMapping : OutputMapping ::= <UpperBound:java.lang.Integer> <LowerBound:java.lang.Integer> <Result:java.lang.Integer>;