need help with cccam online checker script on gemini 4.10 image (please help)

hi ,
i hope someone can helpo me. i was using a script to check my cccam was online , it checked every 30 mins. i done this bye adding the script with cron on gemini 4.40, but i have went back tgo the gemini 4.10 image using cccam 2.0.9 and my dreambox is a 500s, so my ? is on gemini 4.10 ima\ge there is no cron in blue button/extras settings, so how or what do i do to get it to work? like i had it working on the gemnin 4.40 image as it had a cron option in blue button/extras settings

hope someone can help me

thanks

scott