Stat panel with empty zabbix source


I have a stat panel which is getting data from zabbix. Sometimes the script cant run, so zabbix dont get the value. After that from grafana stat panel this box disappear. Until its getting again the value.
So what i want. If the query dont get value, dont hide the box. For example it could be gray or something.

I tried this settings, but its not working
Screenshot 2022-07-25 at 10.31.52

Any advice how to make visible, if its not getting value?