I can't dim the lights on the google assistant

I recently bought 2 yeelight light bulb (colour ) that’s on firmware version 2.0.6_0035 I have lan control on and I have read the list of compatible voice assistant commands like " Turn on (device name)" but only the scene commands seem to be working it just says " Sorry it looks like that device hasn’t been set up yet" or it just searches what I said on the Internet even though I have already linked the yeelight app account to the google home app can annyone help me?