Rivermark Traffic Lights Magic

Opening any of the rivermark’s traffic light assets generates different permutations of on/off states for the bulbs.

I would like to learn how is this achieved and how can I influence this behaviour? What is the icontrol magic?

Video:

Example Asset:
Assets/Isaac/4.1/Isaac/Environments/Outdoor/Rivermark/dsready_content/nv_content/usa/country_assets/traffic_lights_tmp/assemblies/1000001_11/1000001_11.usda

@pcallender @jlafleche

anyone? @dennis.lynch

Workaround by manually altering the asset’s variants to have better control. Sad that nobody told how this really works.

Is there an embedded script or something there?

@hclever