hi
you will find the condition in selections trigger expression.
if you want to see the last traded amount for a selection, then you will have to set a trigger to record the traded last amount.
new trigger
set user variable
name tl
value traded_last
set the selection to the one that you want to monitor
set the trigger to no more often that 0.10
open the variable screen
type tl
now you can see the last traded amount
mcbee