[kepler-dev] 1st and 2nd run of the same workflow give different outputs

[Gongjing Cao]

Hi,

I came to an interesting workflow when I try to use PortParameter. It
generates different outputs at the 1st run and the 2nd (and after) run.

Seems the PortParameter only take the default value in the 1st run, instead
of taking the value which is passed from the previous actor.

Does anybody know why? How can I let this workflow always give the right
output as in 2nd run.

Thanks!

Gongjing
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