How to show "Sold Out" error message instead of "None Left" using the Inventory Widget

I would also like that if a night sells out, the form will show "Sold Out" and they will not be able to purchase tickets for that evening.

You can add the CSS code below for getting the error message, which is Sold Out.

.items-left.none-left{display:none;}

label.line-through:after{content:"   SOLD OUT";}

 

 Here is how it works: