Access coord value in script_score in ES 1.7.x

Elastic Stack Elasticsearch
1

Hi,

I am using explain API to understand the scoring. I can see this coord value something like this

{
"value": 0.75,
"description": "coord(3/4)"
}

So I want to use this value 0.75 in script_score and calculate the _score? How can I achieve this?