How to assign MX(Maximum Time) when we use HubAction("lan discovery...")?

Devices & Integrations Device Ideas
1

In our scenario, we may have more devices in same lan network.
So, our device MX is fixed for 4.
We would like to change MX for 4 using HubAction(“lan discovery…”).
And, we tried lot of options, still we are getting MX = 1 in device side.
Could you help me resolve this issue?
Thanks.

2

Did you ever get this figured out?