Total won't update on gform_product_total

So now that the Total field works again with Otto's Simple Facebook Connect plugin, it doesn't appear to update when I enter a promo code. This used to work. I tested this in Preview, and it doesn't work there, either.

Here is the code:

add_filter( 'gform_pre_render_2', 'joe_ind_js' );

function joe_ind_js( $c ) {
	echo <<<END
<script type="text/javascript">
	function gform_product_total( formId, total) {
		if(jQuery("#input_2_26").val().toLowerCase() == 'xyzpromo' )
			total -= 30;
		return total;
	}
</script>
END;
	return $c;
}

One caveat I'll note: This script does work if I fill in the promo code and refresh the screen. Once refreshed, the promo code field is still filled in with the correct promo code.

Hi Joe,

Can you provide a link to a page where this code is implemented?

Hi Joe,

The form total is only updated (and the gform_product_total function called) when a pricing field has been updated via user interaction. Your promo field is not a pricing field so typing within it does not trigger the form total update process.

You can bind the change event of your promo field to update the form total like so:

http://pastie.org/4040207