Help Configure Nodon Octan Remote

I have just got my self one of these remotes.

I’m trying to configure it for LED confirmation of button press, but am having not luck getting it to work.

In device>device options i have changed the parameters as follows:

Variable: 3
Data size: 1 byte hex
Value: 3

Is there something else I should be doing to get the LED’s to work.

Many thanks