Change ID of Web Template Web Item In URL - BW 3.5

Hi,

We recently got BW 3.5 and I'm experimenting with the "web template" web item.

I want to use commands in the URL to change which web template id that the "web template" web item uses.

I tried <SAP_BW_URL item="TEMPLATE3" template_id="ZMYWEB">

where TEMPLATE3 is the name of the web item and ZMYWEB is the name of a web template. This didn't work. I think i'm missing some syntax. I can't find any documentation on this command.

Any ideas?