@RuthAnn Haefli I think you can run multiple calls to your API based on the input or timeseries data that is sent in your request. In your case one with temperature and another with humidity. It might be easier for you to test the same with the demo sample to understand how you can format data and feed it to the API.
Metrics advisor provides a higher level of functionality which might suit this scenario to add both the dimensions in a single request which is not possible with Anomaly detector API.