show_video function not work on 2.7

These do not work on 2.7 only 2.6 is there a reason please,or can you tell me what to change?
show_video function
* top
* new
* recently_viewed
* featured

this is what i have tried
{insert name=show_videos assign=show_videos num_videos=5 type='new'}

{section name=i loop=$show_videos}

<p>
<a href="{$baseurl}/view/{$show_videos[i].video_id}/{$show_videos[i].video_seo_name}/">
<img src="{$tmburl}/1_{$show_videos[i].video_id}.jpg">
</a>

{$show_videos[i].video_title}

</p>

{/section}
Any ideas would be much appreciated
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