metasock expert advisor

Does Bullcharts have a function which performs the same as metastocks expert advisor?

If I view a chart selected from a bullscan is there a function (or formula) that I can use to demonstrate previous buy signals generated from the scan?

Using the metastock expert advisor a formula can be inserted to provide up or down arrows on the charts to indicate prior buy signals generated from the scan.

Any help on this topic would be most appreciated.

Thanks

Grant

Brendon

Thanks for the advice. 

Cheers

Grant