Why can I only use an Expression to label

Discussion created by m23456 on Jan 28, 2014
Latest reply on Feb 13, 2014 by rborchert
I would like to use a filed in my attribute table to label my features, but that option is grayed out in the label properties.  It will only let me write an expression.  Is this just an Arc10 bug or have I accidently done something that is preventing me from labeling features by attribute? ANd if it is a bug, does anyone know how to fix it?  Some of the features in my map (that I hadn't previously written an expression for) will allow me to choose an attribute.  The features that I wrote an expression for, though, will not let me change to label by attribute.

Thanks in advance