حساب الفرق بين تاريخين بدون أى إضافات

day = System.GetDate(DATE_FMT_DAY);
month = System.GetDate(DATE_FMT_MONTH);
year = System.GetDate(DATE_FMT_YEAR);

Input.SetText("day", day);
Input.SetText("month", month);
Input.SetText("year", year);

day2 = Input.GetText("day2");
month2 = Input.GetText("month2");
year2 = Input.GetText("year2");

day2 = String.ToNumber(day2);
day = String.ToNumber(day);

month2 = String.ToNumber(month2);
month = String.ToNumber(month);

year2 = String.ToNumber(year2);
year = String.ToNumber(year);


if day2 <=  day then
day3 = day-day2
else
day3 = (day+30)-day2
month = month-1
end
Input.SetText("day3", day3);

if month2 <=  month then
month3 = month-month2
else
month3 = (month+12)-month2
year = year-1
end
Input.SetText("month3", month3);

if year2 <=  year then
year3 = year-year2
Input.SetText("year3", year3);
else
result = Dialog.Message("Notice", "Are you born in future ???", MB_OK, MB_ICONINFORMATION, MB_DEFBUTTON1);
end