String method of reflect.Value does not work as expected

I'm trying to retrieve the string value from a reflect.Value,

I expect value.String() to be okok but I got <interface {} Value> instead.

Did I miss something?

package main

import (
    "fmt"
    "reflect"
)

func dump(args *[]interface{}) {
    value := reflect.ValueOf(*args).Index(0)
    fmt.Println(value.String())
    if value.String() != "okok" {
        fmt.Println("miss")
    }
}

func main () {
    var args []interface{}
    args = append(args, "okok")
    dump(&args)
}