Calling a flow with a form from Service API

Hi,

I have a really simple test flow that simply pops a simple form.

[img]att1[/img]

Is it possible to run this flow from a service API?

I.e. Call via GET

http://decisions.test.com/Primary/?FlowId=a53385c4-4489-4470-96c6-f98ef750b290&Action=api&sessionid=NS-5c8b787d-e9da-4fa3-8d0f-5c575efeec73&outputtype=JSON

All it’s doing for me is returning {"flowTrackingId":"fd470b1c-c840-4d34-b10e-6d364045b65e"}
I was hoping to see the form.

Unfortunately I’m under a time constraint on this one so don’t have a lot of time to investigate.