sql = "Insert Into Gestion (Id,IdCli,Inicio,Acta,Vto,cierre) values ('" & txtId.Text & "','" & txtIdCli.Text & "',str_to_date('" & txtInicio.Text & "','%d-%m-%Y'),'" & txtActa.Text & "',str_to_date('" & txtVto.Text & "', '%d-%m-%Y'),'" & txtCierre.Text & "')"