I can't put comma on the app

Hi people,
I have the best salution that will work to all of you!
You just need to type in the amount you want (for example 1,7) somewhere else and then copy and paste it to Revolut! You dont need to change language etc. A comma or a point format may depends on you country - 1,7 or 1.7, just try both and you will find out which one is the allowed format for your country.