What is the Correct Syntax for Using Expressions in Dropbox Upload Action?

This topic was automatically generated from Slack. You can find the original thread here.

Given I want to use an expression in a action, Dropbox upload, such that I will upload to output/$(dynamic part) - im having trouble getting the right syntax used. again, using a previous workflow for inspiration, i tried this, but it fauled with inValid or unexpected token - {{output/${{steps.download_result_to_tmp.$return_value.filename}}}}

messed up the paste in slack a bit, here it is:

{{output/${{steps.download_result_to_tmp.$return_value.filename}}}}

nm, got it -

output/{{steps.download_result_to_tmp.$return_value.filename}}