Features of this extension have been added in-product as of 2019.2
With this extension you can simply click on a mark or multiple marks on a worksheet and update a parameter with those values. This allows you to update reference lines, calculations, filters and more with just one click of your mouse. In the sample dashboard shown below, selecting a country from any worksheet updates the scatter plot's reference lines and colors to match the selection. Configuration includes additional options for persisting the last selection and multi-selection with a delimiter.
Select a pre-existing parameter for the extension to manipulate.
Choose a field to populate the parameter on selection.
Choose which worksheet(s) to listen to for selections.
Optional: Choose if you want keep the last selected values after deselection.
Optional: Choose if you want to allow multi-select mode and if so, your delimiter.
Source code on GitHub