Create a JSON Array in IBM Integration Bus

CREATE FIELD OutputRoot.JSON.Data.to_BusinessPartnerTax IDENTITY (JSON.Array)to_BusinessPartnerTax;
SET OutputRoot.JSON.Data.to_BusinessPartnerTax.Item[1].BusinessPartner = '';
SET OutputRoot.JSON.Data.to_BusinessPartnerTax.Item[1].BPTaxType = '';
SET OutputRoot.JSON.Data.to_BusinessPartnerTax.Item[1].BPTaxNumber = '';