gqlgen only return 200 error

I want to return Http status code errors(400,500) in gqlgen Graphql Query

I tried

"github.com/vektah/gqlparser/v2/gqlerror"

err := gqlerror.Error{
Message: "Invalid Data",
Extensions: map[string]interface{}{
"code": 400,
},
}

this method.But its return 200 APi response with this error body.

How to change this 200 error to 400 error in GQL API?