Back bet in the place market if the selection is not in the first 3 rows in the win market

[robbed]

Do you know how to place a back bet in the place market if the selection is not in the first 3 rows in the win market?

[jamesedwards]

Use a stored value or signal at 'event' level that stores whether a selection is ranked >3 in Betfair row index order. Use that stored value or signal as a condition to trigger a trade in the place market.