policy = fmt.Sprintf(policy, dates...)

	region := "us-east-1"
	// Create a new POST request with success_action_redirect field specified
	req, perr := newPostRequestV4Generic("", bucketName, keyName, []byte("objData"),
		credentials.AccessKey, credentials.SecretKey, region, curTime,
		[]byte(policy), map[string]string{"success_action_redirect": redirectURL.String()}, false, false, false)

	if perr != nil {

	"$cache-control":           true,
	"$content-type":            true,
	"$content-disposition":     true,
	"$content-encoding":        true,
	"$expires":                 true,
	"$key":                     true,
	"$success_action_redirect": true,
	"$redirect":                true,
	"$success_action_status":   true,
	"$x-amz-algorithm":         false,
	"$x-amz-credential":        false,
	"$x-amz-date":              false,
}

		formValues.Set("Key", strings.ReplaceAll(formValues.Get("Key"), "${filename}", fileName))
	}
	object := trimLeadingSlash(formValues.Get("Key"))

	successRedirect := formValues.Get("success_action_redirect")
	successStatus := formValues.Get("success_action_status")
	var redirectURL *url.URL
	if successRedirect != "" {
		redirectURL, err = url.Parse(successRedirect)
		if err != nil {