You know you have to use a WebRun to update the old WF forms in v. 9.x
Here's some of the ones I've used and I thought it would be nice to share them.
The first line is the old WF form, the 2nd line is the WebRun Web Program field value and the 3rd line is the WebRun Post String value.
See Lawson KB article 556115 (and yes, I list some that Lawson didn't include).
Additional hint: To see the fields available do a method=Inquire on the XML form you're working with.