Setting different panels to different time ranges in a single dashboard

Hi,

I tried to modify the json - but that does not work for me. I do not find the parameter “hidetimeoverride” and when I try to add the parameter, there comes an error message.

I only found this:

“timeFrom”: “”,
“title”: “$filter_description”,
“type”: “timeseries”,
“timeShift”: null,
“datasource”: null

So how can the JSON be modified exactly for changing the time range. Is it possible to use variables as input parameters in the JSON or defined dates for “timefrom” (like “2021-03-11 12:09:41.340” → correct format?)?

Thank you!
Greetings
Patrick