Tab character to get sub section numbering not working

I have to insert text at proper place in word with proper numbering. I am able to insert at proper place. Regarding numbering, using paragraph break, i am able to get next section numbering. But since it is the child section or sub-section, using tab character I wanted to get the sub section numbering. But it is not working.

Eg.
What is happening
2.2.1 In Scope
2.2.2 [some scope requirements]

What I want
2.2.1 In Scope
{tab } 2.2.1.1 [some scope requirements]

@kavita

If you want to use tab space then you can try either vbTab or chr(9) to type tab space into the text.

Both these options introduces tab space but it does not introduces the sub-section numbering.

Eg.
What is happening with vbTab or chr(9)
2.2.1 In Scope
2.2.2 {tab} [some requirements]

What is expected(section number to be changed)
2.2.1 In Scope
{tab} 2.2.1.1 [some requirements]

@kavita

Sub section number you have to do it. Bot won’t do this one.