I can create a JSON grid, but can I POST that json somewhere?

I have a grid with the Initial Module selected as JSON. I use a search page to send to this grid which then creates JSON and lets me View or Download that generated JSON.

What I really want is to be able to generate the JSON based on my grid’s SQL, and instead POST that to an external webservice.
Is there a way to capture what Scriptcase generates or do I have to generate the JSON myself to do this?

look at this post maybe helps