PLEASE HELP WITH SCRIPT EDIT

Hello everybody, I need very little help with a script that I would like to be edited.

It straddles the market at a user defined time, placing a buy and a sell stop above and bellow the ask and the bid price with a user defined offset.

What I want to be changed is that the orders to be offset to the previous bar high/low instead of the current bid/ask.

That's it, pretty simple, but I am not a programmer and don't know how to do this.

If somebody is willing to help, please send me a PM