I have been struggling for some time now to get a google earth map in my route building. I have this message below my API Key that says; "use this key in your application by passing it with Key=ApI_KEY parameter." I have been entering the API Key manually but what is the above parameter referring to? I hope you guys don't get tired of me. I would really like to get past this point so that I can start my project.
Did you consider asking Google? It is their API key you are having a problem with https://developers.google.com/maps/documentation/javascript/get-api-key