VI Export Job - Conditional export of two data fields into one column

SOLVED

I want to export SO_InvoiceDetail data.  In one of the columns, I need the value to be the ItemCode, unless there is an AliasItem, in which case I want the AliasItem to be exported in the column.  My export currently looks like:

InvoiceNo - Col 1

ItemCode - Col 2

AliasItem - also Col2, with condition that len(AliasItem) <> 0

The export result is 3 columns of data, not 2.  Is there a solution for this?  Or is there an "if-then-else" type of function that I could use in the conditional calculation to map col2 to the ItemCode if the AliasItem is blank, else use the Alias Item? 

Thanks for any assistance.