Simulink Requirments with Microsoft Word?

Hello,

I've been trying to import requirments from a Word file into Simulink Requirments. However, I don't get the numeration I want. Instead of getting subindeces as detailed in the word doc (like 1.1, 1.2, 2.1, 2.2 ...) I get only subindeces of 1 (1.2 instead of 2, 3 instead of 1.3 and so on). The only way to get them is to modify the requirments once imported but this is rather unconvienent.

What do I have to do in the Word doc in order to get the right indeces?

I'm attaching the layout I'd like to achieve and what I actually get.