Backtesting with different selling delays according to an if condition

[torebecca@xxxx]

is it possible to back test so that for instance you have a buy 
condition that will buy at whenever you set in the settings... but 
the delay for selling varies according to an if condition

ie
if share goes down 5% in a day... sell at the close of that day
else sell at the beginning of the next day...

hopefully this one should be easy to answer ;)