if in usergroup id

[Dr.CustUmz]

i created a template where i have:

<if condition="is_member_of($post, $popbbgperm) AND $post[pbext] !== ''">

i created the variable inside of postbit_display_complete:

<hookname>postbit_display_complete</hookname>
			<phpcode><![CDATA[
      $popbbgperm = explode(',' , $vbulletin->options['drcpo_sup_pb_perm']);
			eval('$popbbg = "' . fetch_template('pb_bg_img') . '";');
		]]></phpcode>

and i have my options field able to use usergroup ids like 6,2, ect...

noting i do is working and its frustrating me like crazy, ive looked over some of BOPS scripts and the only difference i can rly see are i use is_member_of inside a template.

can anyone help me get it so if post user is member of usergroup show this.