This question is old, but I came across it having a similar need. I solved my need and figured I'd share this. I'm still on v.9 of Laserfiche and Quickfields. :-( So I'm unsure if the current version has a better way to accomplish this. (Hope to upgrade this year! :-) )
My need was to take a document, perform OCR picking up information along the way. Based upon a date in the document, I needed to file it in a path that includes the current Fiscal Year. Our FY is from July 1 - June 30, so anything with a month > 6 needs to be filed in the current year + 1 as the Fiscal Year.
Here is how I accomplished "date math" (adding 1 year):
Create a "Fiscal Year" multivalue token based upon the Document Date:
(This is performed in "Page Processing" for me, but I only do this on the first page, I don't need it re-evaluated for each page) (also my token already exists, but you would click on "Create").
Make sure to format it correctly, and make it a Multivalued:
(You only enter the one value here).
Set a Conditional to test if we are still on the first page (you may not need to do this), and the Month of the Document Date is greater than 6:
If the conditional is TRUE, modify the Fiscal Date:
(My token already exists, but you would click on "Modify"
not "Create")
The new value would be 1 (which we want to add to the current
year), and you want to "Append to existing values".
Finally, where you need the actual Fiscal Year you simply have to call
the Multivalue token "Fiscal Year" (in my case) and apply the "SUM"
function on the values:
Right click on the value where you want it and select the
token editor:
Check Apply Function box and click on "Select a fucntion":
Choose "SUM" click on "OK"
Click "OK"
If the current year is 2018
and the Month <= 6 then
the Fiscal Year will be 2018.
If the month is > 6 then
the Fiscal Year will be 2019.