Unable to assign S_TCODE to a new transaction

Hello,

I have created a new transaction with SU93 like described here:

http://wiki.scn.sap.com/wiki/display/Snippets/Create+Transaction+Code+for+a+View

This transaction is defined as "Parameter Transaction". It is related to a view with transaction SM30.

In the header there is no field to put the authorization object S_TCODE.

How to assign this transaction to S_TCODE in order to make a authorization check for the new Transaction?

Regards.

chris