Welke flow voor dynamische prijs berekening

Hello ?

Who can help me put the formula into a flow that calculates the dynamic price including VAT?
I can’t find where in the formula I can enter {price}+costs*1.21.

Handy, a NL topic title with an English body…

Pls Translate your Topic, it is an English Category.

For Dutch: [HowTo]⚡️Nieuw in Homey: dynamische elektriciteitsprijzen - Wat in te vullen

For English: [HowTo] ⚡️ Introducing Dynamic Electricity Prices - Contract Values to enter