Switch On / Off Not working

Hi, I send on/off commands but never start the IF sentence… I attach the logs view…
Device Switch PowerControl CentraLite

        def command = resp.data
    	log.debug "etag: ${etag}"
 		log.debug "command: ${command}"

		def c = "'${command}'"

	    switches.each {
        	def state = it.currentValue("switch")
        	log.debug "switch: ${state}"
   		}

		if (c == "on") {
           log.debug "turning on.."
           switches.on()
        } else	if (c == "off") {
           log.debug "turning off.."
           switches.off()
        }
		log.debug "ni on u off !!"

ErrorLog

Regards,
Juan