hello I have to try to make with the vector but I did not succeed I acknowledge that I am not very gifted in java. can you help me? VariableBinding[] vars; PDU requestPDU; vars[0].setOid(new OID("1.3.6.1.2.1.1")); vars[1].setOid(new OID("1.3.6.1.2.1.2")); vars[2].setOid(new OID("1.3.6.1.2.1.3")); requestPDU.addAll(vars); .....