求且公式問題-飛狐大交易師

DIFF:EMA(CLOSE,12)-EMA(CLOSE,26);

DEA:EMA(DIFF,9);

A1:=BARSLAST(REF(CROSS(DIFF,DEA),1));

底背離:=(REF(L,A1+1)>L?OR?REF(C,A1+1)>C)?AND?(L,DIFF)>REF((L,DIFF),A1+1)?AND?CROSS(DIFF,DEA);

中的AND?(L,DIFF)>REF((L,DIFF),A1+1)??這段在通達信中能用，可是在交易師中不能用，知道為什么不？在交易師中應該如何的寫呢？謝謝哦?

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