How can we trigger a workflow, based on certain property value. For eg If we click on the asset properties and change a field value and click on save then a particular workflow should be triggered in reference to that metadata property value. Thanks in advance
You can refer to Out of the box DAM Metadata Writeback workflow for example which implements your use-case. The launcher for this workflow listens to a Node Modification event and runs the workflow as soon a node of type nt:unstructured is modified.