How to get uuid(dynamic value) in FeatureContext method

Question

My code access only hard coded ID (/api/user/{id}). But I want it works with dynamic value (for example: uuid).

/**
 * @When I send a :http request to :url
 *
 * @param $http
 * @param $url
 */
public function iSendARequestTo($http, $url)
{
    $url = $this->attachQueries($url);

    if ($this->isUrlContainsRuntimeParameters($url)) {
        $url = $this->mergeRuntimeParametersValues($url);
    }

        $this->client->request(
            $http,
            $url,
            $this->parameters,
            [],
            $this->headers,
            $this->rawData
        );

    $this->response = $this->client->getResponse();
}

Extra Functions:

 private function attachQueries($url)
{
    foreach ($this->queries as $key => $value) {
        if(strpos($url,'?') !== false) {
            $url .= '&' .$key. '=' .$value;
        } else {
            $url .= '?' .$key. '=' .$value;
        }
    }

    return $url;
}

private function isUrlContainsRuntimeParameters($url)
{
    preg_match(self::RUNTIME_PARAMETER_PATTERN, $url, $matches);

    return !empty($matches);
}

private function mergeRuntimeParametersValues($parameter)
{
    preg_match(self::RUNTIME_PARAMETER_PATTERN, $parameter, $matches);

    return empty($matches)
        ? $parameter
        : preg_replace(self::RUNTIME_PARAMETER_PATTERN, $this->runtimeParameters[$matches[1]], $parameter);
}

I want to rebuild method "iSendARequestTo()" make it works with dynamic Doctrine Values (e.g. uuid)