XML Publisher .pdf password

We are creating a .pdf output using .rtf template and have set the .pdf security as follows:

&pwd is a randomly generated password.
   Local array of string &XMLP_Prop, &XMLP_PropValue;
   &XMLP_Prop = CreateArrayRept("", 0);
   &XMLP_PropValue = CreateArrayRept("", 0);
   &XMLP_Prop.Push("pdf-security");
   &XMLP_PropValue.Push("true");
   &XMLP_Prop.Push("pdf-open-password");
   &XMLP_PropValue.Push(&pwd);
   &XMLP_Prop.Push("pdf-encryption-level");
   &XMLP_PropValue.Push("1");
   &XMLP_Prop.Push("pdf-permissions-password");
   &XMLP_PropValue.Push(&pwd);
   &XMLP_Prop.Push("pdf-no-printing");
   &XMLP_PropValue.Push("true");
   &XMLP_Prop.Push("pdf-no-changing-the-document");
   &XMLP_PropValue.Push("true");
   &XMLP_Prop.Push("pdf-compression");
   &XMLP_PropValue.Push("true");
   
   &XMLP_Prop.Push("pdf-printing-allowed");
   &XMLP_PropValue.Push("0");

When the document is opened, the system asks for the password. So far so good.