InfoPath Dev

Well - just to speak very generally here - usually you'd have rules on your Category field that set the value of the Application field - if that is what you are trying to do? I'm afraid at this point I'm a bit confused - why do you have so many drop downs for Application? 

 I'm not sure what your data source looks like - are all the drop downs in the Application Name column bound to the same field in the data source?

 Where are you setting the rule? Remember, you need to set the rule on the field that changes, not the target field (sorry if you already know this, I just seem to see this error a lot. :) )

 It all depends on where you are using the formula. If you'd attach a template under the options tab, I'd be happy to help you with it.

 The refresh command should update your XML with the latest from the SharePoint list - I'm obviously not explaining well what I'm trying to find out. Deleting is part of "refresh" - when the refresh command executes, we store a list of the current IDs for list items in the XML - then the next time you Submit, we can find out ...

 So ../@NAME is a relative XPath. We are at CONTACTPERSON - so ../ takes us back to COMPANY, and @NAME gets us the company name attribute - @NAME is an attribute on COMPANY. Here's a blog post of mine with some links to learning XPath resources. I think what you are calling self containing tags are attributes. In the sample above, Player ...

Yup - you can always put files in a zip and attach that as well. So - put a rule on Company - no condition - to set a field's value. The field you are going to set is the main data source field for the contact person. The XPath to get the right contact name should ...

 So - in your drop down, what is the field that is being used for the value? Is it ContactPerson? Your current XPath says "I'd like the CONTACTPERSON field from Contacts where CONTACTPERSON is equal to the field bound to the dropdown list". Is this being used in a rule or a default value? It would be helpful to know:Where the ...

 Can you please check and see if Refresh is working? When you open your form, after the Refresh command runs, there should be something in the results node - even just that the items match. You may need to disable other commands that run after Refresh to verify this, or copy the results node to another field.