When using nodes like “Excel Reader” or “List Files/Folders” we have to input the folder from which we want to import the files/data. Sometimes it will be useful if this (input folder) will be available as a variable in the next nodes as root folder.
This feature is available at the moment. Taking the Excel reader as example, navigate to the flow variables section and find the path variable. In the free text box on the right, fill in the desired flow variable name.