diff --git a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/ConditionWidget.java b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/ConditionWidget.java
index cdaa0d1..82166aa 100644
--- a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/ConditionWidget.java
+++ b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/ConditionWidget.java
@@ -45,7 +45,7 @@ import com.sencha.gxt.widget.core.client.form.TextField;
  */
 public class ConditionWidget extends SimpleContainer {
 
-	private final ConditionWidget thisCont;
+	private ConditionWidget thisCont;
 	protected String HEIGHT = "210px";
 	protected FieldLabel matchLabel;
 	protected ToggleGroup groupMatch;
diff --git a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/MultiColumnFilterDialog.java b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/MultiColumnFilterDialog.java
index 2b2d3f1..e984a0e 100644
--- a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/MultiColumnFilterDialog.java
+++ b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/MultiColumnFilterDialog.java
@@ -17,8 +17,8 @@ import com.sencha.gxt.widget.core.client.event.HideEvent;
 import com.sencha.gxt.widget.core.client.event.HideEvent.HideHandler;
 
 public class MultiColumnFilterDialog extends Window {
-	protected String WIDTH = "650px";
-	protected String HEIGHT = "400px";
+	protected String WIDTH = "640px";
+	protected String HEIGHT = "480px";
 	protected C_Expression exp = null;
 	protected TRId trId;
 	protected EventBus eventBus;
@@ -31,8 +31,13 @@ public class MultiColumnFilterDialog extends Window {
 	}
 
 	protected void create(){
+		setWidth(WIDTH);
+		setHeight(HEIGHT);
+		setHeadingText("Filter");
+		
 		MultiColumnFilterTabPanel mcfTabPanel=new MultiColumnFilterTabPanel(this, "Filter", eventBus);
 		add(mcfTabPanel);
+		show();
 	}
 	
 	
diff --git a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/operation/OperationsStore.java b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/operation/OperationsStore.java
index a918c4d..be8c402 100644
--- a/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/operation/OperationsStore.java
+++ b/src/main/java/org/gcube/portlets/user/td/expressionwidget/client/operation/OperationsStore.java
@@ -37,20 +37,22 @@ public class OperationsStore {
 	static ArrayList<Operation> operationsText = new ArrayList<Operation>() {
 		private static final long serialVersionUID = -6559885743626876431L;
 	{
-	    add(new Operation(1,"BEGIN_WITH","The value begin with",C_OperatorType.BEGINS_WITH));
-	    add(new Operation(2,"CONTAINS","The value contains",C_OperatorType.CONTAINS));
-	    add(new Operation(3,"ENDS_WITH","The value end with",C_OperatorType.ENDS_WITH));
-	    add(new Operation(4,"MATCH","The value match",C_OperatorType.MATCH_REGEX));
-	    add(new Operation(5,"NOT_BEGIN_WITH","The value not begin with",C_OperatorType.NOT_BEGINS_WITH));
-	    add(new Operation(6,"NOT_CONTAINS","The value not contains",C_OperatorType.NOT_CONTAINS));
-	    add(new Operation(7,"NOT_ENDS_WITH","The value not end with",C_OperatorType.NOT_ENDS_WITH));
-	    add(new Operation(8,"NOT_MATCH","The value not match",C_OperatorType.NOT_MATCH_REGEX));
-	    add(new Operation(10,"IS_NULL","The value is null",C_OperatorType.IS_NULL));
-	    add(new Operation(11,"IS_NOT_NULL","Thel value is not null",C_OperatorType.IS_NOT_NULL));
-	    add(new Operation(12,"BETWEEN","The value is between",C_OperatorType.BETWEEN));
-	    add(new Operation(13,"NOT_BETWEEN","The value is not between",C_OperatorType.NOT_BETWEEN));
-	    add(new Operation(14,"IN","The value is in",C_OperatorType.IN));   
-	    add(new Operation(15,"NOT_IN","The value is not in",C_OperatorType.NOT_IN));  
+		add(new Operation(1,"EQUALS","The value is equal to",C_OperatorType.EQUALS));
+		add(new Operation(2,"BEGIN_WITH","The value begin with",C_OperatorType.BEGINS_WITH));
+	    add(new Operation(3,"CONTAINS","The value contains",C_OperatorType.CONTAINS));
+	    add(new Operation(4,"ENDS_WITH","The value end with",C_OperatorType.ENDS_WITH));
+	    add(new Operation(5,"MATCH","The value match",C_OperatorType.MATCH_REGEX));
+	    add(new Operation(6,"NOT_EQUALS","The value is not equal to",C_OperatorType.NOT_EQUALS));
+	    add(new Operation(7,"NOT_BEGIN_WITH","The value not begin with",C_OperatorType.NOT_BEGINS_WITH));
+	    add(new Operation(8,"NOT_CONTAINS","The value not contains",C_OperatorType.NOT_CONTAINS));
+	    add(new Operation(9,"NOT_ENDS_WITH","The value not end with",C_OperatorType.NOT_ENDS_WITH));
+	    add(new Operation(10,"NOT_MATCH","The value not match",C_OperatorType.NOT_MATCH_REGEX));
+	    add(new Operation(11,"IS_NULL","The value is null",C_OperatorType.IS_NULL));
+	    add(new Operation(12,"IS_NOT_NULL","Thel value is not null",C_OperatorType.IS_NOT_NULL));
+	    add(new Operation(13,"BETWEEN","The value is between",C_OperatorType.BETWEEN));
+	    add(new Operation(14,"NOT_BETWEEN","The value is not between",C_OperatorType.NOT_BETWEEN));
+	    add(new Operation(15,"IN","The value is in",C_OperatorType.IN));   
+	    add(new Operation(16,"NOT_IN","The value is not in",C_OperatorType.NOT_IN));  
 	}};
 	
 	static ArrayList<Operation> operationsBoolean = new ArrayList<Operation>() {