Foreach loop with vb condition on multidimensional array

[joshtrav]

Long title, heh.

I have a foreach loop iterating through a predefined multidimensional array.

                <vb:each from="bans" key="banid" value="k">
                    <vb:if condition="$bans.$k['duration'] != False">
                    	<td>{vb:raw k.ban_duration}</td>
                    <vb:else />
                    	<td>&infin;</td>
                    </vb:if>
                </vb:each>

I am trying to properly evaluate $k["duration"] but cannot. Even when assigned false it will evaluate true in some cases, or false on all in other attempts.

I have tried the following

$bans[$banid]['duration'],
$bans['banid']['duration'],
$bans[banid]['duration'],
$bans[$banid].duration,

etc.,

I have been at it for hours and can't seem to get it to evaluate properly.

I have also tried different options using $k['duration'], etc.

If anyone can shed some light on this it would be greatly appreciated.