Parameters while reading oData service

Hello,

I am using below code to get data from an oData service in my ui5 application as an array:

var oModel = new sap.ui.model.odata.ODataModel(serviceUrl, {json: true,loadMetadataAsync: true});

var salesOrders = [];

oModel.read("/SalesOrderSet", {

               async: false,

               success: function (oEvent) {

               $.each(oEvent.results, function (i, item) {

               salesOrders.push({

                     "OrderNo" : item.OrderNo

               });

              });

              }}); 

I am getting the values fine into this array, however I want to pass some customer parameters back to the abap code where the data is prepared to be sent to the service. Any thoughts how I can do this?

Note that there is an importing parameter IT_KEY_TAB in the get_entityset method in the odata service class, but I am not sure how to populate the parameters from the UI application.

Thanks,

Charles