working in TIBCO Cloud Integration Flogo

[JGrotex]

Tried the Extension with TIBCO Cloud Integration Flogo as well, and it smoothly working.
You just have to Zip a Folder that contains only this Activity in the 'activity' Subfolder and upload it as Extension. Maybe you should some Install ZIP + Instruction for TCI as well?

You can find another Scripting activity that I created a long while back, it's very similar to what you did.
The main difference is that the one I created is loading the script from an external URL, so you can adjust the script at any time. https://github.com/JGrotex/tci-extensions/tree/master/extensions/Scripting

regards, Jörg