specify field fill order

[buck2202]

Submitted this to pfn/passifox as well, but didn't realize there was a live fork--

I am attempting to use the "additional fields" functionality to control a drop-down box on a login page. My keepass database has the proper KPH entry, KeePassHttp is properly configured to return it, etc. My issue is that when the dropdown box selection changes, this particular web page automatically clears the username and password field. So, the flow seems to be:

1. chrome extension fill username/password
2. chrome extension sets dropdown box
3. login page clears username/password

Filling the fields again just repeats the process, as the string-field set operation seems to register a change on the webpage whether or not the dropdown value was already correct.

Is it possible to control the order in which fields fill? This issue could be avoided if I could configure it to fill the string field before the username/password. Another workaround would be to allow a "passive" set of string fields; i.e. if the field contains the correct value already, don't register a change on the webpage. This would at least let the username/password fill for me on the second try.