Sequencer does not update with skylight which only work in Blueprint but I am a beginner.

https://www.veed.io/view/302748e2-5fbd-42f7-be65-e10587b73c65?panel=share

As you can see, I set up the keys for the skylight color on this particular sequence shot but as soon as I transitioned to my previous shot with different camera and scrubbed back to it, the RGB color has vanished unless I turn the visibility of the light actor back on and off.

Which of course the play simulation and render final output won’t work as well for skylight.

Hence I came across this solution where apparently you need to set up the event track to trigger which can be achieved in blueprint however I have little knowledge so I don;t understand that process where he brought multiple class together with some nodes that have targets and what variable did he worked with.

I need the instructions for this: