diff --git a/plugins/TestingPanel.java b/plugins/TestingPanel.java
index 0a93b75..a950a12 100644
--- a/plugins/TestingPanel.java
+++ b/plugins/TestingPanel.java
@@ -11,6 +11,7 @@ import ch.psi.pshell.swing.MotorPanel;
 import ch.psi.pshell.ui.App;
 import ch.psi.utils.swing.MonitoredPanel;
 import ch.psi.pshell.ui.Panel;
+import ch.psi.utils.State;
 import ch.psi.utils.swing.SwingUtils;
 import ch.psi.wsaf.ApplicationStateException;
 import ch.psi.wsaf.Task;
@@ -57,6 +58,22 @@ public class TestingPanel extends Panel {
         motor = (Motor) TestingPanel.this.getDevice("motor");
         motorPanel.setDevice(motor);        
     }
+    
+    protected void onStateChange(State state, State former) {
+    if ((state == State.Ready) && (former == State.Busy)) {
+        if ("test".equals(getController().getRunningScriptName())) {
+            try{
+                Object ret = eval("ret");
+                if (ret != null) {
+                    SwingUtils.showMessage(getComponent(), "", ret.toString() + " - " + ret.getClass().getName());
+                }
+            } catch (Exception ex) {
+                SwingUtils.showException(getComponent(), ex);
+            }                    
+        }
+    }
+}
+
         
     public class NetbeansPluginPanel extends MonitoredPanel {
 
diff --git a/script/power-supply.py b/script/power-supply.py
index bc6ea11..ac3880e 100644
--- a/script/power-supply.py
+++ b/script/power-supply.py
@@ -61,4 +61,4 @@ ActualIA.close()
 
 scan.end()
 
-ret = 0
\ No newline at end of file
+ret = 'pippo'
\ No newline at end of file