我想在自定义屏幕中使用逻辑删除，并将以下内容添加到我的DAC：#regionDeletedDatabaseRecordpublicabstractclassdeletedDatabaseRecord:PX.Data.IBqlField{}protectedbool?_DeletedDatabaseRecord;[PXDBBool()][PXDefault(false)]publicvirtualbool?DeletedDatabaseRecord{get{returnthis._DeletedDatabaseRecord;}set{this._DeletedDatabaseRecord=val