I searched around here and couldn't find anything that got me past this not working:
I have an export in a composite called PiDemo1 in the PiDemo namespace:
() as Export_1 = Export(Filter_1_out0)
streamId : "tempStream"
and I have an Import in the Composite ImportTemp in the PiDemo namespace:
(stream<int32 temp> Import_2_Out0) as Import_2 = Import()
applicationName : "PiDemo::PiDemo1" ;
streamId : "tempStream" ;
(there is also a fileSink off the output of the Import)
I get output to the Export (at least it says I do), but I never get anything on the Input stream.