Re; Hammered, scan for SMA volume and force index..
tried sma (5, volume) > sma (20, volume) but get "incorrect - an integer was expected"
Not sure if you might have something a little wacky in the input line, but it works fine for me, as follows;
[type = stock] and [SMA(5, volume) > SMA(20, volume)]
Also note the Force index is available in both the Basic and Advanced scan engines, if you want to use that. See the SC blog from last June, or my post from last June.