Hello,
The client can call any Cloud Script that is available by using the ExecuteCloudScript API call, and Cloud Script itself can call any of the Matchmaking API calls under Multiplayer category. Could you provide more details? Such as the specific problem or error you're having.
It appears I had an error in my Cloudscript javascript, and subsequent tests are working for me. I'm not sure if there are any adverse implications of starting the matchmaking process (RegisterGame) multiple times simultaneously through Cloudscript, but for now I'm operational as desired and moving forward. Thank you for the speedy reply.
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