Trigger scenario step based on completion of flow zone

This relates to idea to be able to build everything in Given Flow zone. Details are here: https://community.dataiku.com/t5/Product-Ideas/Flow-zones-and-support-for-them-in-scenarios/idc-p/17...

I would like to have a possibility to trigger scenario step based on information that given FlowZone has been rebuilt.

Cheers,

Tomas