Hi all
I'm attempting to run a workflow using e.g. Data Source 1 (DS1) and DS2. This then appends data to an output file, and then that appended output file will be used beyond then in the workflow.
I've attempted to use a Block Until Done, but I think I'm making a mistake. After the output has taken place, the initial action is an input, which I can't link to a Block Until Done?
Any thoughts on the below image trying to explain the above - the output should happen first, and then the input should happen next.

Thanks
H