Pdf con password Genexus 9.0 con java

[matarasky]

Estimados, lo que trato de hacer es asignar una password a un pdf,
creo un procedimiento en Genexus 9.0 agrego las librerias en el classpath del modelo. y el codigo seria el siguiente :

Código:

    java try {
    java       com.lowagie.text.pdf.PdfReader reader = new com.lowagie.text.pdf.PdfReader("/emision/detalle/Detalle_sinPasword.pdf");
    java       com.lowagie.text.pdf.PdfEncryptor.encrypt(reader, new java.io.FileOutputStream("/emision/detalle/Detalle_conPasword.pdf"), "Hello".getBytes(), "World".getBytes(), com.lowagie.text.pdf.PdfWriter.AllowPrinting | com.lowagie.text.pdf.PdfWriter.AllowCopy, false);
    java     } catch (Exception e) {
    java      System.out.println(e.toString());
    java     }

Al momento de ejecutar , no de compilar porque lo hace bien al compilar en java me sale este error:

java.lang.NoClassDefFoundError
at pc/pfsencrip.S114
at pc/pfsencrip.execute_int
at pc/pfsencrip.execute
at pc/upassword.e12V1CO2
at pc/upassword.actionEventDispatch
at com/genexus/ui/GXWorkpanel$runEvent.run
at com/genexus/uifactory/wfc/WFCUIFactory.invokeLater
at com/genexus/uifactory/UIFactory.invokeLater
at com/genexus/ui/GXWorkpanel.buttonActionPerformed
at com/genexus/ui/FocusManager.setFocusMouseClicked
at com/genexus/ui/FocusManager.mouseClicked
at com/genexus/uifactory/wfc/WFCMouseListener.mouseClicked
at com/ms/wfc/core/EventHandler.invoke
at com/ms/wfc/core/Component.fireEvent
at com/ms/wfc/ui/Control.onClick
at com/ms/wfc/ui/Button.onClick
at com/ms/wfc/ui/Button.wndProc
at com/ms/wfc/ui/Control$ControlWindow.wndProc
at com/ms/wfc/app/Window.callback
at com/ms/wfc/win32/Windows.SendMessage
at com/ms/wfc/ui/Control.sendMessage
at com/ms/wfc/ui/Control.reflectMessage
at com/ms/wfc/ui/Control.wmCommand
at com/ms/wfc/ui/Control.wndProc
at com/genexus/uifactory/wfc/ScrollPanel.wndProc
at com/ms/wfc/ui/Control$ControlWindow.wndProc
at com/ms/wfc/app/Window.callback
at com/ms/wfc/win32/Windows.CallWindowProc
at com/ms/wfc/app/Window.defWndProc
at com/ms/wfc/ui/Control$ControlWindow.defWndProc
at com/ms/wfc/ui/Control.defWndProc
at com/ms/wfc/ui/Control.wmMouseUp
at com/ms/wfc/ui/Control.wndProc
at com/ms/wfc/ui/Button.wndProc
at com/ms/wfc/ui/Control$ControlWindow.wndProc
at com/ms/wfc/app/Window.callback
at com/ms/wfc/win32/Windows.DispatchMessage
at com/ms/wfc/app/Application$ThreadContext.runMessageLoop
at com/ms/wfc/app/Application.run
at com/ms/wfc/app/Application.run
at com/genexus/uifactory/wfc/WFCUIFactory.loopEvents
at com/genexus/uifactory/UIFactory.loopEvents
at com/genexus/ui/GXWorkpanel.run
at com/genexus/ui/GXWorkpanel.start
at achs/upassword.execute_int
at achs/upassword.execute
at achs/upassword.executeCmdLine
at achs/upassword.main



Ya lo he intentado agregandole un monton de classpath, que he encontrardo:
Itext.jar; itext-1.4.6.jar; commons-io-2.1.jar; commons-net-3.0.1.jar;