No, it isn't what I meant. The change will effect the whole document. I want to replace all links automatically. In the whole document.
1.
1.1.
1.1.1.
1.1.2.

2.
2.1.
2.2.
2.2.1.
2.2.2.

If I change 2 into 3, I want to have everything changed. Is it possible?
If not, I'll have to use Excel.