Hi @stvn_vl,
What a coincidence! AFAIK this is not supported by default in KNIME.
Anyhow and as we were missing that functionality too, we just released the Node Annotator a couple of weeks ago. The Node Annotator lets you modify its node annotation or the annotation of any other node in your workflow. Thus you can write whatever you want to the annotation/comment field of any node in your workflow (e.g. names, formulas, regexs, last execution date).
@qqilihq even provided a nice example workflow, that automagically annotates “String Manipulation” nodes in a workflow with its expression. Not 100% matching your use case, but a good component to get started with.
Best regards,
Daniel