Add order total to order email subject line

[jpluttme]

I was using the following to include the total purchase amount in the subject line of the order confirmation emails.

{{trans "%total" total=$order.getBaseTotalPaid()}}

 I was using the official Authorize.net Magento extension and the order totals appeared in the subject of the order emails.

I had to revert back to the basic Authorize.net Magento implementation after issues with the extension (Stores-Configuration-Sales-Payment Methods-Authorize.net (Deprecated), and now the total is no longer appearing.  

I cannot figure out what code to use in place of $order.getBaseTotalPaid() to get it working again.

Any help would be greatly appreciated.

[jpluttme · Accepted solution]

Actually figured it out.  For anyone interested, I had to use

{{trans "%total" total=$order.getGrandTotal()}}

instead.