Sequence number in Document Designer

Content

Hi,

How to generate sequence number realtime in the Document Designer loop?

We are not going to show model in template. We are just showing the items/parts in the template. 

Since we have model, If we use-SequenceNumber in the document designer, we got the output like 

2

3

4

6

7

1 & 5 is model.

Thanks,

Mohan