ITS Service - Dynamic Logoff URL Redirect

Hi everybody,

how can I create a dynamic Logoff URL Redirect into a ITS service ?

For example:

http://<servername>:<gatewayport>/sap/bc/gui/sap/its/<myitsservice>

I am refering about ITS Service's property you can find to Error Page Tab >Logoff Page Tab >URL Redirect.

Thanks,

Damiano