[Dr.CustUmz]

It does return a number, but for some reason it still not working, the option exist. I do toggle it one to the other, but it always shows postcard.

I Tried

($vbulletin->options['drc_embed_vine_smpl'] === 1 ? "simple" : "postcard")

and

($vbulletin->options['drc_embed_vine_smpl'] == 1 ? "simple" : "postcard")

this is the plugin

<hookname>postbit_display_complete</hookname>
<phpcode><![CDATA[
      $drc_embed_vine = '<iframe src="https://vine.co/v/$2/embed/'.($vbulletin->options['drc_embed_vine_smpl'] == 1 ? "simple" : "postcard").'" width="480" height="480" frameborder="0"></iframe>';
        $this->post['message'] = preg_replace('~(<a href="https?://vine.co)/v/(.*)" target="_blank">(https?://vine.co)/v/(.*)<\/a>~', $drc_embed_vine, $this->post['message']);
]]></phpcode>

and the option

<setting varname="drc_embed_vine_smpl" displayorder="1">
<datatype>boolean</datatype>
<optioncode>yesno</optioncode>
<defaultvalue>1</defaultvalue>
</setting>