Opt. Price Data. 

Note we now have (optional) fields for price data.

Opt Price data is used for all, unless you use the other live, verify, WF fields.

Shown here is a system built on 29,30,31 min bars but will trade it live on 30 min bars.

We can verified the system using all bars from 25 to 35 except 29,30,31. (No need to use 29,30,31) as it been done already when the system was built

In the example shown we will Walkf Forward on 30,29,31 mintute bars. However it is recommened to walk forward on only the central time frame.