UNI app ADC sensor voltage Scene won't accept decimal numbers

I wonder if it is normal to only be able to select a whole number for ADC trigger in the scenes app?

I am using a soil moisture detector that gives a 1 to 3 volt range as it is I can only select 1,2 or 3 volts to trigger scene. I need this for integrating to Alexa and google home, I see no reason I shouldn't be able to pick 1.8 for example. The URL commands and web interface won't help in this case. Do I need to make a feature request or am I doing something wrong?