AC din-rail dimmer GL-SD-003P

Hi,

My name is Paul, i am not new to programming but a newby for Zigbee.
I have several GL-SD-003P dimmers.
A nice future is that it is possible to set the minimum dimming level.
A bit unhandy is that yiu need the button in the dimmer front panel.
So i is not possible to see the light when you set the minimum level.

So i tried to set the Min_Level attribute, but that does not work.

Does anybody have a good idea to help out?

Regards,
Paul