Originally Posted by Charles Kenyon

As Paul said, you cannot set this up using any of Word's dialogs. It has to be typed into the document and you need to use Ctrl+F9 to insert the field braces.


Your field does not look like his. It does not have the same structure.


His: {IF{STYLEREF "StyleName"}<> "Error!*" {STYLEREF "StyleName"}}
Yours: {IF STYLEREF 1 = "Error!*", "", STYLEREF 1}


Note the missing braces, and the added commas. Your field does not follow the required field syntax although it would be good as an Excel function or in vba. Remember, too, that the spaces are important.