New explorer programming help

Hi,

I am trying to create an explorer for displaying the current trend values of all scrips. The indicator that is available is P & F Trend that nees to be used.
My requirments is

1. list out all scrips that has had had a change in P & F trend value from -1 to + 1 or vice versa as compared to the earlier bar( 5/10/60/EOD).

2. List out the high and low of the current bar and the earlier bar.


I am exploring this to take it out to excel and determing scrips which are likely to have a trend reversal.

I have been trying this for a few days ,but not been very sucessfull.

Any help appreciated and welcome.

Thanks,

Sri