[amibroker] Stepping backwards in loop

["Graham" <gkavanagh@xxxxxxxxxxxxx>]

I have this formula in a loop but it steps through the values from the
beginning of the data rather than from the end. 
I have tried reversing the line " for ( i=1; i < bar ; i++ ) " to  " for (
i=bar; i > 0 ; i-- ) " but stills seems to check the bars in the forward
direction. 
All I want to do is go back from the selected (or last) bar. 
Help appreciated. 

period = 3;
Bar = SelectedValue(BarIndex());
LastBar = LastValue(BarIndex());
start = Lastbar-bar;

LowerLow[0] = SelectedValue(L);
for ( j=1; j<=period; j++ )
{
 for ( i=1; i < bar ; i++ )
 {
  if ( L[i] < LowerLow[j-1] )
  {
   LowerLow[j] = L[i];
  }
 }
}

Cheers,
Graham
http://groups.msn.com/ASXShareTrading
http://groups.msn.com/FMSAustralia


------------------------ Yahoo! Groups Sponsor ---------------------~-->
ReplayTV: CNet Ranked #1 over Tivo!
Instant Replay & Pause live TV.
Special Sale: 50% off!
http://us.click.yahoo.com/UUMW7B/.5qGAA/ySSFAA/GHeqlB/TM
---------------------------------------------------------------------~->

Send BUG REPORTS to bugs@xxxxxxxxxxxxx
Send SUGGESTIONS to suggest@xxxxxxxxxxxxx
-----------------------------------------
Post AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx 
(Web page: http://groups.yahoo.com/group/amiquote/messages/)
--------------------------------------------
Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html 

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/