Default problem withParticle Effect on lockscreen!

Hi all!
I did follow the instructions below:
1. Open SQLite Editor
2. Under the Apps tab, click Settings storage
3. Click settings.db*
4. Click System*
5. Search for "lockscreen"*
6. Edit the field "lockscreen_ripple_effect"*
7. Change the value to*3

But I have a problem, it works very well but when I reboot, the value auto back to 0 so can't get effect.
HOW TO FIX IT??