Try this. I think it should work. (Prueba con esto, supongo que debe funcionar). DEFINE DATE-INI DATE = PARM DEFINE DAYNUMBER NUM*2 = MOD(DAYS(DATE-INI),7) DEFINE DATE-END DATE = DATE(DAYS(DATE-INI) + 33) & IF DAYNUMBER = 0 ELSE & DATE(DAYS(DATE-INI) + 34) & IF DAYNUMBER = 6 ELSE & DATE(DAYS(DATE-INI) + 35) Un saludo a todos, Daniel Rodruiguez Madrid (Spain)