need help with htaccess

/**
     * Switches the primary Context for the modX instance.
     *
     * Be aware that switching contexts does not allow custom session handling
     * classes to be loaded. The gateway defines the session handling that is
     * applied to a single request. To create a context with a custom session
     * handler you must create a unique context gateway that initializes that
     * context directly.
     *
     * @param string $contextKey The key of the context to switch to.
     * @param boolean $reload Set to true to force the context data to be regenerated
     * before being switched to.
     * @return boolean True if the switch was successful, otherwise false.
     */
    public function switchContext($contextKey, $reload = false) {
        $switched= false;
        if ($this->context->key != $contextKey) {
            $switched= $this->_initContext($contextKey, $reload);
            if ($switched) {
                if (is_array($this->config)) {
                    $this->setPlaceholders($this->config, '+');
                }
            }
        }
        return $switched;
    }