Primefaces Spreadsheet

[dato.java]

Hello,

I am developing some web application and want to use primefaces spreadsheet component, so my problem is that when i have already developed project in which i use report designer with openoffice , such designer need for web ,but main problem is that i have my own functions registred in openoffice (for example there exists function sum(), but i have my own mysum() and java method which resides behind it and it does something for business logic) , does primefaces component have possibility to add/register my own function and use it then? if yes can anyone tell me how? OpenOffice has its own API for that