I installed the CEP ( Proton ) through the official documentation, https://forge.fiware.org/plugins/mediawiki/wiki/fiware/index.php/CEP_GE_-_IBM_Proactive_Technology_Online_Installation_and_Administration_Guide
After that, I watched this recommended video to learn more about CEP. https://edu.fiware.org/pluginfile.php/653/mod_resource/content/1/CEP-Tutorial.mp4
But I can't check engine instance state, because appears this error in response:Could not read instance state, message: Error activating jmx proxy: