Unable to show CustomerBalance in Invoice - only able to show Balance. Can this be fixed?

Unable to show CustomerBalance in Invoice - only able to show Balance. Can this be fixed?

Hi,

I have signed up for a 30 day trial of Zoho - the only thing keeping me away from it is the fact that I cannot display a Customers total balance in an invoice pdf generated. 

Can you please support the addition of %CustomerBalance% in the invoice? I want to show the customers previous balance and then add the invoice amount, giving a total balance.