Curly braces {} are used to create a reference to an anonymous hash, so the construct

fields      => {
         $param_string
     }

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Assigns an anonymous hash reference as the value to the hash key "fields". And since there is only one element ($param_string) inside the braces (instead of one or many key=>value pairs) you get an error message.


All dogma is stupid.

In reply to Re: passing a variable as a string by tirwhan
in thread passing a variable as a string by coldfingertips

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