Our formula will now fully support javascript. You can add all types of Javascript constructs to our formula. After the execution of your Javascript formula, you should put the result of your formula in a variable called "RAGIC_RETURN", and the value of "RAGIC_RETURN" will be loaded into the formula cell.
On the previous update about date arithmetics, you can find more information on date arithmetics on http://www.cpearson.com/excel/datearith.htm , supported functions now include: COUNT AVG SUM DATE MONTH YEAR DAY ACC. Please contact support@ragic.com if you have any question on their uses.