last actvity on postbit

[puertoblack2003]

I trying to add this code in postbit

default code: <vb:if condition="$prepared['lastactivitydate']">
	<dl class="blockrow stats">
		<dt>{vb:rawphrase last_activity}</dt>
		<dd> {vb:raw prepared.lastactivitydate}<vb:if condition="!$show['detailedtime']"> <span class="time">{vb:raw prepared.lastactivitytime}</span></vb:if></dd>

to use this

<dt>{vb:rawphrase last_activity}</dt>  <dd> {vb:raw prepared.lastactivitydate}</dd>

i can see the phrase but not the last activity time..need guidance

t.i.a