Size in quote currency

I would like to put an exact size of dollars (or other quote currency) when i add an extra buy or sell layer within a position. Now i'm only able to put a percentage.

At least i would like to see the size (also) in dollars.

I only know the size now, when i see the prompt, just before confirming (added image)

(the thing now is like going to the supermarket and the price of eg. cookies is put as a percentage of the volume of the company, instead of local ccy. i just want to know how much it costs)