exeRequest.addInput("envelope", Arrays.asList(wps.createBoundingBoxInputValue("EPSG:4326", 2, Arrays.asList(-180d, -90d), Arrays.asList(180d, 90d))));
exeRequest.addInput("width", Arrays.asList(wps.createLiteralInputValue("2")));
exeRequest.addInput("height", Arrays.asList(wps.createLiteralInputValue("1")));
OutputDefinitionType rawOutput = wps.createOutputDefinitionType("result");
rawOutput.setMimeType("application/arcgrid");
ResponseFormType responseForm = wps.createResponseForm(null, rawOutput);
exeRequest.setResponseForm(responseForm);
// send the request
ExecuteProcessResponse response = wps.issueRequest(exeRequest);