hm_callpanel arguments

Hello everyone, 

I would like to use hm_setpanelproc {hm_callpanel pressures} command on my tcl script. Is there any option to automatically go to 'faces' instead of 'elements': 

<?xml version="1.0" encoding="UTF-8"?>

I have also second question, anybody know command to CardEdit for selected Material:

<?xml version="1.0" encoding="UTF-8"?>

Thank you