Problem with RFC to XI - using tables

Hi experts,

I have a RFC function module in R/3 which uses table - the table has 2 components PartNumber and ComptiaCode. But when the RFC call is made, in XI, the value of ComptiaCode is always blank. This is despite the table in the FM has been populated correctly with values for PartNumber and ComptiaCode. Pls see below xml from XI.

<?xml