edismax boost query(bq) with local params syntax

[rajani m]

Hi Solr Users,

  Could you help me with the bq syntax that supports boosting a term with
caret
<https://solr.apache.org/guide/7_2/the-standard-query-parser.html#boosting-a-term-with>?
 Given the following boost query, I need to multiply the payload value with
10.

bq={!payload_score f=field_name v='solr' func=sum}

I tried the following but no luck -
bq=({!payload_score f=field_name v='solr' func=sum})^10
bq={!payload_score f=field_name v='solr'^10 func=sum} (gives syntax error)

Thank you,
Rajani