Hi,
Use this formula content(Courtesy, this link) :
dateVar myDate := {Your Date Field}; //replace with your date field
numberVar DayNum := Day(myDate);
numberVar Week1Saturday := (7 - DayofWeek(Date(Year(myDate), Month(myDate), 1))) + 1;
stringVar WeekNum;
if DayNum IN [1 to Week1Saturday] then
WeekNum := "1"
else if DayNum IN [(Week1Saturday + 1) to (Week1Saturday + 7)] then
WeekNum := "2"
else if DayNum IN [(Week1Saturday + 8) to (Week1Saturday + 14)] then
WeekNum := "3"
else if DayNum IN [(Week1Saturday + 15) to (Week1Saturday + 21)] then
WeekNum := "4"
else if DayNum IN [(Week1Saturday + 22) to (Week1Saturday + 28)] then
WeekNum := "5"
else
WeekNum := "6";
WeekNum
Thanks,
Raghavendra