filters: [
                    {
                        name: "custrecord_aptpricelevel",
                        operator: "is",
                        values: [pricelevel]
                    },
                    {
                        name: "custrecord_aptcountrycode",
                        operator: "is",
                        values: [countrycode]
                    },
                    {
                        name: "custrecord_aptsubsidiaryid",
                        operator: "is",
                        values: [subsidiaryid]
                    },
                    "or",
                    {
                        name: "custrecord_aptdefault",
                        operator: "is",
                        values: [true]
                    }
                ]

By default search filters are `AND`ed how do I get an OR filter?