Here it is:
Created a form with connections to several SharePoint lists. The form is pretty simplistic. In one sections I have a series of grouped boxes.
BOX A BOX B
The value in Box A will use a Rule that connects to a SharePoint list and populate Box B with an approriate value.
Here is the XPATH Version of the code:
xdXDocument:GetDOM("Bid Sequence")/dfs:myFields/dfs:dataFields/dfs:Bid_Sequence/@Block_Start[../@Sequence_Number = current()]
Bid Sequence is the SHarePoint List Data Connection, based on the approriate value I set the @Block_Start value to BOX B
Like I said this is working fine ... except after I post the form to a SharePoint form library and use it as a web form. It seems to croak on that and simply spits out an error message.
Any ideas?