anonymous identifcation & profile properties...

I want to make use of profile properties in my web app. So I added the following to my web.config:
:
<system.web>
<anonymousIdentification enabled="true"/>
<profile enabled="true">
<properties>
<add name="_myProfileTest" allowAnonymous="true" type="System.SByte" defaultValue="1"/>
</properties>
</profile>
:
</system.web ...