Adding Web Site Category to a new inventory item

We are trying to automatically add a web site category to each new item created.  We have a client script that sets the "website" value but it will not set the "category".  It just stays blank and there is no error logged.  How do you set the "Category" for the new sublist line?

Here is the code we have

                curRec.selectNewLine({sublistId: 'sitecategory'});
                //THIS WORKS
                curRec.setCurrentSublistText({
                    sublistId: 'sitecategory',
                    fieldId: 'website',
                    text: 'SuiteCommerce InStore Website'
                });
                //THIS DOES NOT WORK
                curRec.setCurrentSublistText({
                    sublistId: 'sitecategory',
                    fieldId: 'category',
                    text: 'Home'
                });



Thanks!
Karen