Event hundler to control the Excel function arguments
 

Hi,
I am writing a function (in an add-in) which will be used in Excel
worksheets formula. I want to know if it's possible, to write an event
handler witch will be executed when the user enter each argument in €œfunction
arguments window€� of the €œInsert function wizard€� for my new function in
order to carry out some controls and lookup operations.

Thanks in advance.