Does anyone know how do you center text in a string object in a compound report? I've created a string object on a compound report...

object=string, name='txtgroupname', text='&GroupName', position=(1.5 10.6), color=RGB(0 0 0), font='ARIAL', size=10, $

I pass in a different groupname with variable lengths. I want to put size limits on the string object, but I don't know how to center the text that I'm passing to this object. The output is a pdf. I'm using 7.1.4 on WIN XP2.

Thanks,
Mike