Thank you very much for your reply. It makes sense totally.
I am trying to load events for triggering and although all the conditions are TRUE (large volume and back prices), it deletes the markets. Log shows:
20:38:53 Checking market "Soccer / Singaporean Soccer / Singapore S League / Fixtures 28 August / Home Utd v Courts Young Lions / Over/Under 1.5 Goals".
20:38:53 Checking condition and Market's Name contains "1.5".
20:38:53 Selection: Over 1.5 Goals, initial expr.: "1.5", intermediate: "1.5", final: "1.5".
20:38:53 Selection: Under 1.5 Goals, initial expr.: "1.5", intermediate: "1.5", final: "1.5".
20:38:53 Condition is: TRUE. valid for 2 selections: Over 1.5 Goals, Under 1.5 Goals.
20:38:53 Checking condition and Selection's Index is equal to 1.
20:38:53 Condition is: TRUE. valid for 1 selections: Under 1.5 Goals.
20:38:53 Checking condition or Global User Variables nonqualMO_market_parent_id are set.
20:38:53 Selection: Under 1.5 Goals, initial expr.: nonqualMO_market_parent_id, intermediate: nonqualMO_27251872, final: nonqualMO_27251872.
20:38:53 Condition is: TRUE. valid for 1 selections: Under 1.5 Goals.
20:38:53 Checking condition or Global User Variables nonqual25_market_parent_id are set.
20:38:53 Selection: Under 1.5 Goals, initial expr.: nonqual25_market_parent_id, intermediate: nonqual25_27251872, final: nonqual25_27251872.
20:38:53 Condition is: FALSE.
20:38:53 Going to delete market.
20:38:53 Setting variable 15d to 1.