Bad code inside the DIY widget can break data-lake updates

[rafaellehmkuhl]

This happened when Tony tried to write one, and there was a try to access a non-existing element, so the code stopped and a mini-widget following the same variable (code was inside listenDataLakeVariable) couldn't update, because the code was crashing.

We need to run this code with a try/catch, similar to the transforming functions.