diff --git a/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/expression/C_Expression.java b/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/expression/C_Expression.java
index ceb61c4..42971d0 100644
--- a/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/expression/C_Expression.java
+++ b/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/expression/C_Expression.java
@@ -8,20 +8,29 @@ public class C_Expression implements Serializable {
 	private static final long serialVersionUID = 7818512507606450235L;
 	
 	protected String id="Expression";
-
+	protected String readableExpression;
+	
 	public C_Expression(){
-		
+		readableExpression="Expression()";
 	}
 	
 	public String getId() {
 		return id;
 	}
 
+	public String getReadableExpression() {
+		return readableExpression;
+	}
+
+	
 
 	@Override
 	public String toString() {
-		return "Expression [id=" + id + "]";
+		return "C_Expression [id=" + id + ", readableExpression="
+				+ readableExpression + "]";
 	}
+
+	
 	
 
 }