*** Warning ***
You also need to change the '\?"...
Line 353
text = '\?" . number_format($RunningTax, 2, '.', ',') . "',
Line 360
text = '\?" . number_format($RunningSubTotal, 2, '.', ',') . "',
Line 372
text = '<b>\?" . number_format($Total, 2, '.', ',') . "</b>',
Sorry for the oversite.