Hi,
what you can try is to send values via PUT and GET through the NET.
For example.
In the first device you send the value 1 via PUT in the NET.
In the second device you take this value and save it in Markerbyte 1. Then the Marker 1 will be enabled.
When you send value 2 from the first device Marker 2 will be enabled in the second device.
Value 3 - Marker 1 and Marker 2 will be enabled.
Value 4 - Marker 3 will be enabled
You will find a list which markers correspondent to which Markerbyte in the Help.
regards
Stu