Adding labels to OMScalingIcon?

I’m trying to add a label to an OMScalingIcon as follows:

OMScalingIcon icon = …

OMTextLabeler label = new OMTextLabeler("TEST LABEL", OMText.JUSTIFY_RIGHT);

Icon.putAttribute(OMGraphicConstants.LABEL, label);

It compiles and runs, but I’m seeing no labels.  It works fine for OMPolys and such, but not for OMScalingIcons.  What am I missing?

Thanks,

Nickie