Invoking a flow service from Jsp service

I am trying to invoke a flow service from Jsp page using tag libraries.

I have followed the syntax <%@> and for invoking a flow service :

<webm:invoke>
</webm:invoke>

Is there any other configuration that has to be set to acheive this.

Thanking You,
Anil & Varma

I am sending an edi to TN and saving it in the TN database. now i am trying to retreive the data from the TN database and map to other document.

Could anybody help me in retreiving the data from TN database.

Thanks,
Anil