Changing the format of NSTableColumn built using Core Data Entity ?

FROM : Martin Linklater
DATE : Mon Mar 03 21:51:37 2008

HI - I have what seems a silly question, but I can't seem to find an 
answer. I have a window in IB which contains a 'Core Data Entity' 
table view. This pre-built table has a number of columns, some 
contained strings and some containing integers. What I want to do is 
change the binding of one of the integer columns to bind to a string 
instead.

The problem is that I can change the binding OK, but how do I change 
the format of the column from integer to string ? When I bind the 
column to a string value I get either blank or zero as the cell 
contents. I know the binding changes work OK because I can bind to a 
different integer value no problem.

Where on earth do I change the format of these prebuilt table columns 
using Interface Builder ?

Thanks