Newbie Automatic Analysis Question

[jhlaufer@xxxx]

I've just downloaded Amibroker and was taking a look its Automatic 
Analysis feature. It looks like this is fairly powerful--along the 
lines of AIQ, etc., but I am unable to test any scans. Any attempt to 
scan either all stocks or the current stock using any of the sample 
AFL files results in the error message: "Missing buy/sell variable 
assignments".

Where/how do I enter buy/sell variable assignments or otherwise solve 
this error? 

Thanks.