@Override
 public void setValue(Object value) {
   ClientQuantity clientQuantity = (ClientQuantity) value;
   if (clientQuantity != null) {
     getRequirement(UNIT)
         .setValue(
             CommandUtils.getServerObjectById(clientQuantity.getUnit(), AccounterCoreType.UNIT));
     getRequirement(VALUE).setValue(clientQuantity.getValue());
   }
   super.setValue(value);
 }