code: public function extractVimeoId($varValue, Contao\DataContainer $dc)
  	{
  		if ($dc->activeRecord->vimeo != $varValue)
  		{
  			$matches = array();
  
  			if (preg_match('%vimeo\.com/(?:channels/(?:\w+/)?|groups/(?:[^/]+)/videos/|album/(?:\d+)/video/)?(\d+)(?:$|/|\?)%i', $varValue, $matches))
  			{
  				$varValue = $matches[1];
  			}
  		}
  
  		return $varValue;
  	}
docs: Extract the Vimeo ID from an URL
  
  @param mixed                $varValue
  @param Contao\DataContainer $dc
  
  @return mixed