Hi there,
You can try the filter with the APIs explorer (or your app) to check that there are no syntax errors or general warnings.
In that particular case you need to use HOSTED_AD_CLIENT_ID, which corresponds to the ad client id of a publisher. AD_CLIENT_ID is used for host client ids (which I guess is not what you want).
Cheers,
Jose
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Jose Alcérreca
Developer Relations
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