RemainingNumber__c IF( ActualQuantity__c = 0 ,IF( WIN_manual_number__c = 0,LastbuyQuantity__c , LastbuyQuantity__c - WIN_manual_number__c), LastbuyQuantity__c - ActualQuantity__c ) false LastbuyQuantity__c - ( ActualQuantity__c + WIN_manual_number__c ) BlankAsZero 剩余数量 18 false 0 false false Number false