UE 5.6.1, NDI Media Plugin v1.0. Change source using blueprint

I’m trying to use the new integrated NDI media Plugin in 5.6.1 and I want to change sources using Blueprint. Previously in older NDI solutions, there has been a source input in the receiver, either via a string or a drop-down menu in Blueprint.
I found the NDI source variable where I have specified my source and the NDI source settings and make ndi source settings where i seem to be able to specify my input with a string but I can’t find how to connect this to my source? What node should I use here?
And are there any documentation for the NDI plugin? I can’t seem to find any in the official documentation.