I am looking to make a tag/item modifier that will do an expression. I want it to take the price of the item and increase it by say 1.25. Not as a “discount” on the payment screen, but as a “modifier” for an item. So if the price of the item is $6.00, you can hit the “upgrade” modifier and make it $7.50. But one that will work for whatever the price starts at. So just an (X times 1.25) expression.
NICE!!! I was sure it was possible and that sounds super easy. Thank you much!
Worked perfectly. It was however (25) and that equaled 125% as the 100% was already included. 
Just out of interest what do you use thsi for?
To up-sell a drink… From short to tall. But also for up-selling food items. Like wings.
You should use Portions for that
