FitNesse for Appian - Populating Dropdown Field

Hi,

I've set up FitNesse to run through a pretty basic process, and it manages to go through just fine until it hits the dropdown field. 

What seems to be happening is that it looks at every possible option and checks if that option matches the string passed as the choice value. In my case, it continuously scrolls through every possible choice and does not select any of them. Very rarely, however, it will actually select the correct choice despite passing over it several times before. Usually the test will just timeout, though. 

Given what I've seen, the problem is not due to a typo in the choice value I've passed it (I've tried the index as well). Any help would be much appreciated

We are running on 17.1, using the latest version of FitNesse for Appian.

Thanks

Will