Set anchor point grouping on text layer?

Hi all,

I'm not able to change the anchor point grouping in extendscript.  This doesn't seem to work:

textAnchorPointGrouping = curLayers[i].property("text").property("More Options").property("Anchor Point Grouping");
textAnchorPointGrouping.setValue("Character");

Any thoughts on what I'm missing?  Can't seem to find how to do it in the scripting guide