[amibroker] How do I get the filename of the formula loaded in AA?

[Mike]

Hi,

How can I get the filename of the formula file, currently loaded in 
the Analysis window, using the AmiBroker OLE automation model?

I see methods for loading (given an existing known name) and saving 
(presumably given a new name). But how do I find out what the current 
name is?

Thanks in advance,

Mike