Text Analytics Tag cloud Filtered by Rule based Row filter

I have completed a text analytics "Tag Cloud" workflow (as in the attachment).

Now, I realised I want to run the whole workflow but ONLY for a specific rule condition.

To define this condition, I use "Rule based row filter" node, for another column of my database.

My question is: where in the workflow I need to place the "Rule based row filter" node to reach my goals.

Needs to be placed before  the "String to Document" mode?

Thanks.