It says clearly in the instructions in the link you provided:
Within Excel, the function is named –
CT.ENG.FDDividendAmericanEngine
This means, in Excel, you should not use:
FDDividendAmericanEngine
…you should instead use:
CT.ENG.FDDividendAmericanEngine
To find out how to use functions from a third-party add-in, you need to consult the products documentation (as I just did), or Google for examples of others using the product, or else contact the add-in’s developer.
0
solved FDDividendAmericanEngine Function in QuantLib