Divergence between Delphi versions - DataSnap

SQLServer database proc receives a single parameter that is the enrollment of the face and returns the balance.

SQL Command:

SELECT SUM(CASE Fl_Credito WHEN 1 THEN Vl_Movimento ELSE 0 END) - SUM(CASE Fl_Credito WHEN 0 THEN Vl_Movimento ELSE 0 END)
    AS Vl_Saldo
    FROM tb_MOTOQUEIRO_MOVIMENTO
    WHERE NR_MATRICULA = @PIntMatricula

Calling on Delphi:

  with DmBusca.cdsMotoSaldo do
  begin
    close;
    Params[0].AsInteger := StrToInt(edtMATRICULA.Text);
    Open;
    edtSaldo.Text := FloatToStr(FieldByName('vl_saldo').AsFloat);
  end;