Wemo Led bulb, disable fade out

Does anyone know how to change the way these wemo F7C033 turn off? Using smartthings they fade to zero over 2 sec when turned off, and I would rather have them just turn off immediately. When I had them on my wemo hub I could choose either way.

An old wemo bulb device handler in smartthings can do this if the slider is put to 0%, that will shut the bulb of immediately. But that device handler is written for the classic app, and does not show up correctly on the new app. I was hoping to edit the current device handler (ZigBee Dimmer) to do the same.