Utilizar el shortcode frm-math.
[ frm-math] [ frm-stats id=67 type=total] - [ frm-stats id=42 type=total] [/frm-math ]
Explicado en el link: Math calculations.
Utilizar el shortcode frm-math.
[ frm-math] [ frm-stats id=67 type=total] - [ frm-stats id=42 type=total] [/frm-math ]
Explicado en el link: Math calculations.