ASK fields are simply a way of gathering information to be saved in a
bookmark. If you are working with already entered data you don't need the
ASK fields
In this instance you select the date content of the cell and assign it to a
bookmark - Insert > Bookmark - and name it to match the field construction
i.e. StartDate
As you are comparing this with today's date, you can change the EndDate ref
field in the first item on page 9 - Calculate the # Days Difference Between
Two Dates - to a DATE field thus  :

{={SET a{=INT((14-{Date \@ M})/12)}}{SET b{={Date \@ yyyy}+4800-a}}{SET
c{={Date \@ M}+12*a-3}}{SET d{Date \@
d}}{=d+INT((153*c+2)/5)+365*b+INT(b/4)-INT(b/100)+INT(b/400)-32045}-{SET
a{=INT((14-{StartDate \@ M})/12)}}{SET b{={StartDate \@ yyyy}+4800-a}}{SET
c{={StartDate \@ M}+12*a-3}}{SET d{StartDate \@
d}}{=d+INT((153*c+2)/5)+365*b+INT(b/4)-INT(b/100)+INT(b/400)-32045}\# ,0}

Thus with startdate being the date of your report eg
StartDate (your table cell content) = 12 December 2006
Days Difference:(from the above field construction) =  10

Note that bookmark names must be unique so if you have several entries, each
one must have a different bookmarkname, so you would have to change
'StartDate' to something different for each row e.g.
A_Startdate, B_StartDate etc.

Hi Roger,

First off, copy the field with the calculations (i.e. the field after 'Days Difference:'
from the topic titled 'Calculate the # Days Difference Between Two Dates' and paste it
into the cell when you want the result to appear.

From what you originally posted, the date the report was issued is in Cell H2 in your
table. So, select that date and give in a bookmark, named 'StartDate' (use
Insert|Bookmark).

The next bit depends on whether you have a 'DATE' 'CREATEDATE' 'PRINTDATE' or 'SAVEDATE'
field in your table, showing the date you want the field to calculate up to. If you:
. do have such a field, then select that date and give in a bookmark, named 'EndDate'
. don't have such a field, then select the field with the calculations and press Shift-F9
to expose the coding. Now change the three instances of 'EndDate' to either (a) 'DATE'
'CREATEDATE' 'PRINTDATE' or 'SAVEDATE', according to which of these you want to use. These
are explained under 'date Field Basics' in the tutorial document.

Having done the above, select the field with the calculations and press F9 to update the
calculation.

As Graham said in his post, bookmark names must be unique. So, if you have more than one
calculation in your document, you'll need to edit the 'StartDate' bookmarks *and* the
formula field references to suit. You might use a convention like Graham suggested or you
could incorporate the cell reference into the bookmark name, using something like
''H2Date', for example.

Cheers