InfoPath Dev

I've looked at several threads on this subject but I still can't get my form to work.

I have a repeating table and I'd like to hide values if they are repeating based on the MeterType.  The data is coming from my Secondary data source and looks like this in InfoPath.

myFields/dataFields/d:row/:MeterType

I sure I want to use an Expression to hide the field I'm just not sure what that expression should be.

Thanks. 

In this situation you need to use the preceding-sibling syntax to check if any preceeding nodes match your current node and if so then hide. You can find good help on such advanced XPath formulas from this page: http://www.w3schools.com/xpath/xpath_axes.asp

It would be something like preceding-sibling::/myFields/dataFields/d:row[d:MeterType=current()/d:MeterType]. I'm not an xpath expert but have used similar constructs to achieve what you want.

This hides ALL the entries.

not(d:MeterType = current()/preceding-sibling::d:MeterType)

 All these preceding-sibling threads are giving me a headache.