Error in the JQL Query: Expecting operator but got '('. The valid operators are '=', '!=', '<', '>',

[Nhung]

I want to set up condition via Automation for date custom fields : 

cf[10082] () <= cf[10015] ()

but it's invalid as below:

Could you help me find why this happens?

Thanks

[Paul Heath Armengol · Accepted solution]

Try this "cf[10082]" <= "cf[10015]"

[Nhung]

Hi, thank you for your support, but maybe it is not work for me.

I'll check other way. Anyway thanks.