Hi!

We make software for financial accounting and want to integrate some of that
functionality in MS Excel.
Is it possible to add custom formulas that can be used in cell expressions?

As the user now is able to use the AVERAGE-function he should be able to use
our custom formulas e.g. GET_OUR_VALUE( 'NET PROFITS' ):
=AVERAGE(A1:A4)
=GET_OUR_VALUE( 'NET PROFITS' )

How can we achieve this?

TIA,

Markus