@perelin : This should already be much simpler now i.e. passing {{ importFile.value[0] }} should ideally work as noted here. Does that work, and if not, could you share more about your query? Note that you might want to upgrade the uploader component to the newest version where there would no files field in importFile and value has all of the files field context
We're sorry you had to spend 2 hours on this. This is something we deem as a failure mode for our design of the product, so would love to hear any feedback on this i.e. are docs hard to discover or are less detailed than we like, is this hard to intuit in the product (assuming my suggestion works) etc.