Using windows 7 I find that MS-Word is reffering to the system settings to interpret data. In one of the apps I use, a date is exported with a 2 digit year, even though the setting in that application is explicitly 4 digits. In the additional settings from the controlpanel (region / language) I see that I can change the date range with the limitation that only the upper year is adjustable and not the lower value. as a standard it is 1930 / 2029. having dates in the export of before 1930 these dates are displayed a being from the 21st century. Somebody born in 1923 now still has to be born (date of birth displayed as 2023 LOL) Is there a way to change BOTH values independent from each other?
No. The reason is that you're specifying a 100 year range to use for interpreting two-digit years. When you update the year, the whole range is updated automatically.
The reason for supporting a two-digit year is for "year 2000 compliance." Although many people are still using the last two digits of the year when expressing dates, this feature makes it possible for this to work in a functional, user-friendly manner.