why wont Luminosity work? (1.20)

Here's the problem. when I change the Luminance on my block, nothing changes. it could be because the block I'm making is in another dimension, but o don't understand why it isn't working when I change the light opacity or the tick rate. the only thing that makes the luminosity actually work is when you change a block next to it or place the block normally. so what should I do to make it work? the player does not spawn in the dimension it generates in. (please give specific instructions all my previous attempts have been so broad that I have no idea how to do them