Embed dashboard with parameter

I have created a dashboard and I want to embed a specific page (the 3rd page) in another web application with a parameter. On this page, I have a filter (a dropdown list control) that allows single selection with names. I want to pass the selected name as a parameter in the other application so that end users only see data and information related to this name. The control field is named 'Name_of_the_lead_implementing_', which I have renamed to 'Grantee'. An example of a value in this dropdown list is 'The Green Road'.

I made some attempts like this:

- lookerstudio.google.com/reporting/myreport/page/p_gcxggzq6hd?params=%7B%22 Name_of_the_lead_implementing_%22:%22The%20Green%20Road%22%7D