// do a full describeprocess on my process
DescribeProcessRequest descRequest = wps.createDescribeProcessRequest();
descRequest.setIdentifier(processIdenLocal);
DescribeProcessResponse descResponse = wps.issueRequest(descRequest);
// based on the describeprocess, setup the execute
ProcessDescriptionsType processDesc = descResponse.getProcessDesc();
ExecuteProcessRequest exeRequest = wps.createExecuteProcessRequest();
exeRequest.setIdentifier(processIdenLocal);
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")));