X-Cart forums - Show $$ value for BCSE's Reward Points Mod

Anyone know of a way to make this work in the order_invoice email? I believe the correct variable to show the total points is:

Code:

{$order.points_info.total_customer_points}

If I do the math code with this:

Code:

{math x=$order.points_info.total_customer_points y=$wcmPaymentRate equation="x / y" format="%.2f" assign="wcmPointsDollars"}

{include file="currency.tpl" value=$wcmPointsDollars}

it works great on the order_invoice.tpl that displays in the browser, but is blank in the email. So I assume the email doesn't call auth.php or something? Anyone know of a way around this?