You don't need a spreadsheet to place bets automatically with Betting Assistant at all!
There is a conditional bet placement option you can use and just open a page to a race.
If broadband useage is an issue, there are plenty of FREE bet placement sheets available on the net and on their forum.

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RaceCensus - powerful system testing software.
Now with over 420,000 Metropolitan, Provincial and Country races!
http://www.propun.com.au/horse_raci...ng_systems.html
*RaceCensus now updated to 30/06/2025
Video overview of RaceCensus here:
http://www.youtube.com/watch?v=W821YP_b0Pg