Displaying Due Amount in email

How do I display the amount due in the confirmation email?
So if the user paid a deposit and his confirmation is confirmed in backend he should receive an email with the due amount. Currently the [AMOUNT] tag shows the full amount, which does not make sense...

Hi

The tag was not supported by default. I made modification to the code to support two new tags:

[DEPOSIT_AMOUNT]

[DUE_AMOUNT]

Could you please check and let me know the result ?

Tuan