Thank you Chris for your quick response. I got the check mark to come up, but there is an error associated with it.
Error Message:
Script failed (language is javascript; context is xfa[0].form[0].TopmostSubform[0].MainContent[0].CheckBox3[0]) script=var oDoc=event.target; var f=oDoc.getField("TopmostSubform[0].MainContent[0].CheckBox3[0]"); fstyle=style.ch;
The check mark is appearing, so I don't know what this error is about. Any thoughts?