[Zope] multiple SUBMIT buttons for same method, with parameter

I can use the following in a DTML document to call a specific method: <INPUT TYPE="submit" NAME="mymethod:method" VALUE="Delete this item"> But what if I wanted to have lots of them? I'd like to have multiple SUBMIT buttons, all referring to the same method but diffentiated by parameter - possible? Ie: something like: <INPUT TYPE="submit" NAME="mymethod:1:method" VALUE="Delete item 1"> passing the parameter '1' to 'mymethod', and then later <INPUT TYPE="submit" NAME="mymethod:2:method" VALUE="Delete item 2"> and so on. Incidentally, is the ':method' trick documented? - I can't find it in the DTML guide.