<aiml>
<category>
<pattern>follow me *</pattern>
<template>
  OK, I i will follow you <set name="topic"><star /></set>
</template>
</category>

<topic name="out">

<category>
<pattern>i walk *</pattern>
<template>I follow you.</template>
</category>

<category>
<pattern>i go *</pattern>
<template>I follow you.</template>
</category>
</topic>
</aiml>
for my chatbot named pioyu this does not work for topic.put pioyu in search bots and in rating mature.