diff --git a/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/client/event/ExpressionEvent.java b/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/client/event/ExpressionEvent.java
index a257d7d..3a3260b 100644
--- a/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/client/event/ExpressionEvent.java
+++ b/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/client/event/ExpressionEvent.java
@@ -20,6 +20,7 @@ public class ExpressionEvent extends GwtEvent<ExpressionEvent.ExpressionEventHan
 	public static Type<ExpressionEventHandler> TYPE = new Type<ExpressionEventHandler>();
 	private ExpressionType expressionType;
 	private TRId trId;
+	private String columnId;
 	private String columnName;
 	private C_ExpressionContainer c_ExpressionContainer;
 	
@@ -81,14 +82,24 @@ public class ExpressionEvent extends GwtEvent<ExpressionEvent.ExpressionEventHan
 		this.c_ExpressionContainer = c_ExpressionContainer;
 	}
 
+	public String getColumnId() {
+		return columnId;
+	}
+
+	public void setColumnId(String columnId) {
+		this.columnId = columnId;
+	}
+
 	@Override
 	public String toString() {
 		return "ExpressionEvent [expressionType=" + expressionType + ", trId="
-				+ trId + ", columnName=" + columnName
-				+ ", c_ExpressionContainer=" + c_ExpressionContainer + "]";
+				+ trId + ", columnId=" + columnId + ", columnName="
+				+ columnName + ", c_ExpressionContainer="
+				+ c_ExpressionContainer + "]";
 	}
 	
 	
 	
+	
 
 }