protected function sysVersionDependency($version)
    {
        $sysVersion = new Version($this->sysMajorVersion.'.'.$this->sysMinorVersion.'.'.$this->sysPathVersion);
        $needVersion = new Version($version);

        if (!$sysVersion->isPartOf($needVersion))
        {
            $this->errors->add('module_dependency_sys', 'This module not made for current version of '.$this->systemName.', made for '.$version);
            return false;
        }
        return false;
    }