Change description under quantity field

I am trying to change the description under the quantity field using the code below:

add_filter("gform_product_quantity_1", "set_quantity_label", 10, 2);
function set_quantity_label($sublabel, $form_1){
return "How many:";
}

which I found here:
http://www.gravityhelp.com/documentation/page/Gform_product_quantity

but it isn't working. I want to remove the text "enter a value greater than 1" and leave it blank under the box.

It looks like the form id is "_1".

Of course, now that I've asked this, I'm sure I'll figure it out but...

Here's a link:
http://www.focaluprightfurniture.com/store

Thanks

Yes. It's at the bottom of the Theme Functions php. I know because when I forgot the closing } I shut down the site ;-).

It's there now. It reads as it does above with "gform_product_quantity_1" and "$form_1"

I don't need to remove it on a per form basis. If it's easier to do it globally, that works. I'm about to create a second form that I want to match the first stylistically so it can be removed from all.

While I'm at it, I also need to change the text next to the price box that says "price" to "special order pricing". I'm assuming it is a similar situation.

If it helps, I'm using WP - Genesis theme/eleven40 child theme.

Also using Yoast SEO plugin which I believe uses minifi. Don't know if that has anything to do with it.

Thanks.

Yeah. I've tried it with and without. I'm emailing you a log in now.

Thanks.