File attachmentFile = new File("c:\\tmp\\selenium_temp.jpg");
        
        String fileContent = null;
        
        try {
                byte[] byteArray = FileUtils.readFileToByteArray(attachmentFile);
        fileContent = new String(Base64.encodeBase64(byteArray));
        } catch (IOException e) {
                e.printStackTrace( System.err );
                System.exit(-1);
        }
        
        Attachment attachment =  api.uploadExecutionAttachment(
                1, //executionId 
                "Setting customer plan", //title 
                "In this screen the attendant is defining the customer plan", //description  
                "screenshot_customer_plan_"+System.currentTimeMillis()+".jpg", //fileName 
                "image/jpeg", //fileType
                fileContent); //content
        
        System.out.println("Attachment uploaded");