diff --git a/plugins/TestingList.form b/plugins/TestingList.form
index c45d421..9e141a5 100644
--- a/plugins/TestingList.form
+++ b/plugins/TestingList.form
@@ -18,8 +18,11 @@
       <Group type="103" groupAlignment="0" attributes="0">
           <Group type="102" alignment="0" attributes="0">
               <EmptySpace min="-2" pref="244" max="-2" attributes="0"/>
-              <Component id="jButton1" min="-2" max="-2" attributes="0"/>
-              <EmptySpace pref="497" max="32767" attributes="0"/>
+              <Group type="103" groupAlignment="0" attributes="0">
+                  <Component id="jScrollPane1" min="-2" max="-2" attributes="0"/>
+                  <Component id="jButton1" min="-2" max="-2" attributes="0"/>
+              </Group>
+              <EmptySpace pref="370" max="32767" attributes="0"/>
           </Group>
       </Group>
     </DimensionLayout>
@@ -28,7 +31,9 @@
           <Group type="102" alignment="0" attributes="0">
               <EmptySpace min="-2" pref="198" max="-2" attributes="0"/>
               <Component id="jButton1" min="-2" max="-2" attributes="0"/>
-              <EmptySpace pref="450" max="32767" attributes="0"/>
+              <EmptySpace max="-2" attributes="0"/>
+              <Component id="jScrollPane1" min="-2" max="-2" attributes="0"/>
+              <EmptySpace pref="327" max="32767" attributes="0"/>
           </Group>
       </Group>
     </DimensionLayout>
@@ -42,5 +47,20 @@
         <EventHandler event="actionPerformed" listener="java.awt.event.ActionListener" parameters="java.awt.event.ActionEvent" handler="jButton1ActionPerformed"/>
       </Events>
     </Component>
+    <Container class="javax.swing.JScrollPane" name="jScrollPane1">
+      <AuxValues>
+        <AuxValue name="autoScrollPane" type="java.lang.Boolean" value="true"/>
+      </AuxValues>
+
+      <Layout class="org.netbeans.modules.form.compat2.layouts.support.JScrollPaneSupportLayout"/>
+      <SubComponents>
+        <Component class="javax.swing.JTextArea" name="txtOutput">
+          <Properties>
+            <Property name="columns" type="int" value="20"/>
+            <Property name="rows" type="int" value="5"/>
+          </Properties>
+        </Component>
+      </SubComponents>
+    </Container>
   </SubComponents>
 </Form>
diff --git a/plugins/TestingList.java b/plugins/TestingList.java
index b68c432..c332482 100644
--- a/plugins/TestingList.java
+++ b/plugins/TestingList.java
@@ -16,9 +16,14 @@ import ch.psi.wsaf.ApplicationStateException;
 import ch.psi.wsaf.Task;
 import ch.psi.wsaf.TaskRunMode;
 import ch.psi.wsaf.TaskRunningException;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
 import java.util.HashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import javax.swing.JButton;
+import javax.swing.JCheckBox;
+import javax.swing.JFrame;
 import javax.swing.JPanel;
 
 
@@ -43,12 +48,16 @@ public class TestingList extends Panel {
 
         public NetbeansPluginPanel() {
             initComponents();            
+            buildGUI();
+            hookUpEvents();
         }
         @SuppressWarnings("unchecked")
     // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
     private void initComponents() {
 
         jButton1 = new javax.swing.JButton();
+        jScrollPane1 = new javax.swing.JScrollPane();
+        txtOutput = new javax.swing.JTextArea();
 
         jButton1.setText("jButton1");
         jButton1.addActionListener(new java.awt.event.ActionListener() {
@@ -57,30 +66,85 @@ public class TestingList extends Panel {
             }
         });
 
+        txtOutput.setColumns(20);
+        txtOutput.setRows(5);
+        jScrollPane1.setViewportView(txtOutput);
+
         javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
         this.setLayout(layout);
         layout.setHorizontalGroup(
             layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
             .addGroup(layout.createSequentialGroup()
                 .addGap(244, 244, 244)
-                .addComponent(jButton1)
-                .addContainerGap(497, Short.MAX_VALUE))
+                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
+                    .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
+                    .addComponent(jButton1))
+                .addContainerGap(370, Short.MAX_VALUE))
         );
         layout.setVerticalGroup(
             layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
             .addGroup(layout.createSequentialGroup()
                 .addGap(198, 198, 198)
                 .addComponent(jButton1)
-                .addContainerGap(450, Short.MAX_VALUE))
+                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
+                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
+                .addContainerGap(327, Short.MAX_VALUE))
         );
     }// </editor-fold>//GEN-END:initComponents
-
+    
     private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
         // TODO add your handling code here:
     }//GEN-LAST:event_jButton1ActionPerformed
       
     // Variables declaration - do not modify//GEN-BEGIN:variables
     private javax.swing.JButton jButton1;
+    private javax.swing.JScrollPane jScrollPane1;
+    private javax.swing.JTextArea txtOutput;
     // End of variables declaration//GEN-END:variables
+      JButton remove;
+      JButton appear;
+      JCheckBox cb[]=new JCheckBox[10]; 
+
+     
+
+     
+
+       public void buildGUI() {
+           JFrame fr=new JFrame();
+           JPanel p=new JPanel();
+           remove=new JButton("remove");
+           appear=new JButton("appear");
+             for(int i=0;i<10;i++) {
+                cb[i]=new JCheckBox("checkbox:"+i);
+                cb[i].setVisible(false);
+             }
+           fr.add(p);
+           p.add(remove);
+           p.add(appear);
+           for(int i=0;i<10;i++) {
+             p.add(cb[i]);
+           }
+           fr.setVisible(true);
+           fr.setSize(400,400);
+        }
+
+        public void hookUpEvents() {
+           remove.addActionListener(new ActionListener() {
+                public void actionPerformed(ActionEvent ae) {
+                    for(int i=0;i<10;i++) {
+                        cb[i].setVisible(false);
+                     }
+                 }
+           });
+
+           appear.addActionListener(new ActionListener() {
+                public void actionPerformed(ActionEvent ae) {
+                   for(int i=0;i<10;i++) {
+                      cb[i].setVisible(true);
+                    }
+                }
+           });
+         }    
+    
     }
 }