Can't change brightness (dim) of MSL100R light bulb
### What issue do you have? Please be as thorough and explicit as possible.
I can't change the brightness of MSL100R light bulbs. Apparently the plugin can read the correct brightness, but changing it does only work in the meross app and not in homebridge. I couldn't find any issues regarding this problem. Do you have any idea why it could not be working or any suggestions on how I can debug it?


### Details of your setup.
* Do you use Homebridge (with config-ui?) or HOOBS? 
Homebridge with config-ui


* Which version of Homebridge/HOOBS do you have?
Latest homebridge v1.3.8


* Which version of this plugin (homebridge-meross) do you have? Has the issue started since upgrading from a previous version?
Latest homebridge-meross v7.4.1


* Which Meross devices do you have that are causing issues? Please include product models if applicable.
MSL100R light bulbs
