Method try/catch for keeping inappropriate mergefields

[Nicolas Micoud]

Hi,

I create a class 'Bureau' (Organization) in which i put different methods :

•  getName()
•  getPhone()
•  getLocationFull()
•  getCity()
•  ...

 
In the word template, i added $Bureau.Name, $Bureau.Phone, ... It works well !
 
Is there a way to use a kind of try & catch which will allow to see which merge fields is not handled in the code ?
That would allow to put them on a log file and return "Error / Unknown mergefield".

Thanks,

Nicolas