hi
I forgot to mention the other condition in the delete trigger
AND selections trigger expression market_num is equal to refr_market_num
this condition makes sure that ALL the markets in the my markets list are been monitored before any are deleted.
or if you want to place a bet in the market with the most runners , change the delete trigger to set user variable with the value as market_parent_id , then use that value in the betting trigger to choose the correct market
mcbee