Need to change document parent id during document creation

global $content;
$e = &$modx->Event;

switch($e->name) {
  case 'OnDocFormPrerender':
   	if(($_REQUEST['pid'] > 0) && ($id == 0)) {
	
		if	($parent = $modx->getPageInfo($_REQUEST['pid'],0,'template,id')) {
			
			if($parent['id']==47){
			
				$content['template'] = 5;
			}elseif($parentparent = $modx->getParent($parent['id'],1,'id')){
						
				if ($parentparent['id']==47){
			
					$content['template'] = 9;
				}elseif($parentparentparent = $modx->getParent($parentparent['id'], 1, 'id')){
					if ($parentparentparent['id']==47){
					
					$modx->Event->alert(var_dump($content));
					
						$content['template'] = 9;
								
						if($test = $modx->getParent($_REQUEST['pid'], 0, 'id')){
						    $modx->Event->alert($test['id']);
							$content['parent'] = $test['id'];
						}
												
					} 
				}	
				
			}else{
				$content['template'] = $parent['template'];
				//$modx->Event->alert('heritage template normal');
			}
		}
	
    }
    break;
  
	
  default:
	return;
    break;

}