What is my world night vision command?

The command to get night vision effect in my world is/effect player ID 16 10000 255 true.

1, the first time I entered the game, it was already dark at this time, and we could see that the line of sight was very blurred and there were many stars in the sky.

2. We save and exit. Then right-click the location of the game file on the desktop. Click on this file of MC.

3. Then find this file that starts with V. ..

4. Then find the game version of the game we are playing. Click to enter.

5. Then find the file in notepad format.

6. Double-click to open it and change the number 0 after gamma to 1000. Then save and exit.

7. Then we opened the game we just quit, and found that it was still night and there were stars in the sky. But everything in the water and the plants on the shore can be seen clearly.