[ST Edge] Virtual Dimmer Device Driver

I think that this direct control from button device to lights is only operating solution

I have one Ikea On/Off Button (old firmware) that is controlling Airam GU10 light using Zigbee Groups. Operation ( On/Off and dimming) is instant.

I haven’t found a suitable button device that would support Zigbee Group operations. Also SmartThings is not supporting Zigbee Groups in ST App. Zigbee library is supporting Zigbee Groups.

Is this device also sending dimmer level or only buttons to SmartThings?