Calculated field in datalink, display in feature description

I am having some issues displaying a datalink value in the feature long description.  The creation of the value in the datalink is a calculation see here: 

 

DECODE (TRIM(FI11.PROPINFOVALUE),NULL,'',TRIM(FI11.PROPINFOVALUE)||', ') AS "Additional Bylaw",

 

I am attempting to display this value like this. "{DATALINKNAME.Additional Bylaw}" just like I would with any other valie but it does not work.  Is there another way to display this value?   The field works fine when I look at the datalink in the viewer, however i cannot display the values in the feature description.

 

Thanks