Google Charts: where do I put API Key?

Questions
1

Hi all,

I’m in the NG-Client. I have put a Google chart-component onto a form and set the type to GeoChart. The map draws, but I get no markers.
In the console, I get warnings like:

Google Maps JavaScript API warning: NoApiKeys https://developers.google.com/maps/documentation/javascript/error-messages#no-api-keys
Google Maps JavaScript API warning: InvalidKey https://developers.google.com/maps/documentation/javascript/error-messages#invalid-key
Geocoding Service: You must use an API key to authenticate each request to Google Maps Platform APIs. For additional information, please refer to http://g.co/dev/maps-no-account

I have tried adding my API key as
key and apiKey in the options array, but so far I have had no luck.

var options = {
	        region: '150',
	        displayMode: 'markers',
	        colorAxis: {colors: ['green', 'blue']},
		apiKey: '<myKeyhere>',
		key: '<myKeyhere>'
	      };

    elements.people_map.drawChart('GeoChart', data, options);

Any ideas?

2

I may have run into problems because I have not set up a billing account with google.

Can someone confirm they have managed to use the GeoCharts option of the Google Charts component?
I see it mentioned in the code of the component on GitHub.