I would like to create an app whereby you select a year (e.g. 2018) from a drop down, and depending on which year you choose, different dates are picked up. For example, if 2018 is selected only data for January 2018 to December 2018 is picked up by the workflow.
The dates are being selected by changing the headings of the columns to the dates, and selecting them by using the 'select' tool.