Steps to reproduce:

1. Added item with the key "check_cee.sh["\{HOST.NAME}","CPU idle time (5 min)"]"

Result:

1.  Zabbix starts to complain special characters are now allowed in parameters

Expected:

1.  There should be a way to escape the special characters. These items are being auto discovered . The API exposing these parameters to zabbix defines metric names with special characters and there is no easy way to change the API itself. As the number of such items are more, it is also not possible to manually create these items.