Does anyone know the script to add onto TOS thinkscript strategies so one could back-test a strategy for number of bars that have elapsed.

For example...After stochastics "buy" signal arrow is generated on a chart...then, a "sell" arrow would appear after the fifth bar or seventh bar or whatever the input is. Thanks in advance

Try "def sell = long from 4 bars ago;" where <long> was trigger for long position such as

def long = RSI() > 30;

Maybe something like:

input barexit = 5;
def trigger = stoch crosses above 30;
def sell = trigger[-barexit];