[Solved] Error in rule when I use execute

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I get a error from the execution of a rule:

error [pimatic]: rule backup-config error executing an action: Array.isArray(tags)

The command in my rule works from the commandline with no problem:

execute "cp /home/pi/pimatic-app/config.json /mnt/Backup/Pimatic`date +%Y-%m-%d`.json"

Without the date +%Y-%m-%d the rule works without a problem.
How can I get this rule work with the date in the filename?

Thanks in advance.

try this:

execute "cp /home/pi/pimatic-app/config.json /mnt/Backup/Pimatic{date("YYYY-MM-DD")}.json"

Yes, that does the trick.

Thanks!