[TxMt] Symbol preference question

I'm having a problem populating the symbol list in my files. I have created the following preference item:

{ showInSymbolList = 1; symbolTransformation = 's/(^KW: )(.*)(%)/$2/;'; }

My document is filled with lines such as

KW: postscript essenceoftruth freedom % (fold)

However, the symbol list remains empty. I have double checked that the scope selector for the preference matches the global scope of the document and have closed the bundle editor window. Can someone help me figure out why this is not working?

Thanks,

Colin Hahn »Geben Sie mir Kaffee, dann mache ich Phänomenologie daraus.« "Give me my coffee so that I can make phenomenology out of it." -- Edmund Husserl