SIEM search filter by numeric additional.fields

[chroniclearner]

I have a log source which parses out a field into additional.fields["Num_cloned_repos"]. The value is parsed as a numeric value. The parser code is as follows

if [Num_cloned_repos] != "" {
    mutate {
        replace => {
            "Num_cloned_repos_label.key" => "Num_cloned_repos"
        }
        rename => {
            "Num_cloned_repos" => "Num_cloned_repos_label.value.number_value"
        }
    }
    mutate {
        merge => {
            "additional.fields" => "Num_cloned_repos_label"
        }
    }
}

 While searching in SIEM search, I want to add a filter to only display events where Num_cloned_repos = 2

When I try below query, I get an error

metadata.log_type = "<LOG_TYPE>" and additional.fields["Num_cloned_repos"] = 2

compilation error validating query: type mismatch between "query.udm.additional.fields[Num_cloned_repos]" of type string and "2" of type int line: 1 column: 46-79 : invalid argument

When I try below query, I get an error

metadata.log_type = "<LOG_TYPE>" and additional.fields.key = "Num_cloned_repos" and additional.fields.value.number_value = 2

compilation error generating predicates: predicate conversion for filter expressions failed: dot syntax for map requires field path to end in "key" or "string_value" subfield: invalid argument

 How do I search a numeric additional.fields in SIEM search?