Wiremock standalone body-transformer is not working with bodyPatterns and matchesJsonPath

[rajputvijay32]

I am using wiremock to stubbing the requests. I have created a json file to stub a request:

{
"request": {
"method": "POST",
"urlPath": "/nested/transform",
"bodyPatterns": [
{
"matchesJsonPath": "$.names.[0].['first']"
},
{
"matchesJsonPath": "$.names.[0].['last']"
}
]
},
"response": {
"status": 200,
"body": "{"firstName": "$(names[0].first)", "lastName": "$(names[1].last)"}",
"headers": {
"Content-Type": "application/json"
},
"transformers": ["body-transformer"]
}
}

My request and response are as below:

{
"names": [
{
"first": "Vijay",
"last": "Rajput"
}
]
}

Receiving response is -
{
"firstName": "[{first=Vijay, last=Rajput}]",
"lastName": "[{first=Vijay, last=Rajput}]"
}

Expected response is -
{
"firstName": "Vijay",
"lastName": "Rajput"
}

Is it possible to fetch?