Yes, we have those here and there (including my Container UDF), but i didn't  find one that able to pass arrays or other types to be reliable enough. Differences from other analogs: Stability (reliability) Array support (2D ATM) Ability to get the return data from the interaction process Easy both ways interaction   Notes:   Examples (run both)...   Downloads: AppInteract_v0.5.zip AppInteract_v0.4.zip AppInteract_v0