Hi, i did some more tests but it seems that i’m lacking YAML programming skils.
I’ve created my Dimmer control based on your “Toggle” code for my push buttons. I had to schange the Type of my item that is linked to my Nikobus push button to Switch. Leave actioncommand: ON but change .state== ‘100’ in order to swith my dimmable light on and off using the “Toggle” button of your code. this looks like this:
when burning it shows the value 100 and the icon is “lightbulb_fill” when ik “Toggle” it turns off and the icon changes. The feedback led is reacting as expected and always working fine.
I noticed that when ik click on “Toggle” i am able to see the percentages change. 0 - 15 - 36 - 56 - 100 and back. Or slightly other values. So he seems to read them correctly.
This is because the dimmers are set to gradually start or stop.
I now want to implement a slider but because i am lacking programming skills and have been tearing my hear out after a couple of hours Googling, copy/pasting and so on i’ll decided to come back to you 
I searched for F7 slider and found this Range Slider | Framework7 Documentation and this one is looking realy nice 
i also found this post Dimmer widget oh3 and UI design - Add-ons / UIs - openHAB Community and tried to re-use that YAML code without any success.
This one is looking realy nice and could be combining your “Toggle” switch with a slider.
