Error converting SQL - Datasnap Rest

I have a problem: I have a datasnap / rest server, in it I have the following method:

Function TServerMethods.getComandoSQL(ASQL: string): TFDJSONDataSets;
begin
  qryComando.Active := False;
  qryComando.SQL.Clear;
  qryComando.SQL.Add(ASQL);
  Result := TFDJSONDataSets.Create;
  TFDJSONDataSetsWriter.ListAdd(Result, qryComando);
end;

The method created by the client delphi itself:

function TServerMethodsClient.getComandoSQL(ASQL: string; const ARequestFilter: string): TFDJSONDataSets;
begin
  if FgetComandoSQLCommand = nil then
  begin
    FgetComandoSQLCommand := FConnection.CreateCommand;
    FgetComandoSQLCommand.RequestType := 'GET';
    FgetComandoSQLCommand.Text := 'TServerMethods.getComandoSQL';
    FgetComandoSQLCommand.Prepare(TServerMethods_getComandoSQL);
  end;
  FgetComandoSQLCommand.Parameters[0].Value.SetWideString(ASQL);
  FgetComandoSQLCommand.Execute(ARequestFilter);
  if not FgetComandoSQLCommand.Parameters[1].Value.IsNull then
  begin
    FUnMarshal := TDSRestCommand(FgetComandoSQLCommand.Parameters[1].ConnectionHandler).GetJSONUnMarshaler;
    try
      Result := TFDJSONDataSets(FUnMarshal.UnMarshal(FgetComandoSQLCommand.Parameters[1].Value.GetJSONValue(True)));
      if FInstanceOwner then
        FgetComandoSQLCommand.FreeOnExecute(Result);
    finally
      FreeAndNil(FUnMarshal)
    end
  end
  else
    Result := nil;
end;

When requesting this method from the client:

var
   dataset: TFDJSONDataSets;
begin
   dataset := DataModule1.ServerMethodsClient.getComandoSQL( _SQL )
   self.AppendData( TFDJSONDataSetsReader.GetListValue(dataset, 0) );
end;

So far so good, the problem is when I send an sql of type: select code, description from table where description like '% AD%'

On the server: select code, description from table where description like '' % ''

This happens with AD, FA, FE among others ... if you enter for example% FAR% result is '' ZENDA% ''