Accessing model values in JavaScript

Hi there,

I have a model variable
- service_request of Object type which contains service_type, service_request_id....
- serviceRequest Array type of service request

Also a storage variable
- serviceRequests type of serviceRequest

I am trying to access the service_type and service_request_id in Javascript. However no matter how I do it I can't seem to be getting the values retured

this is what my last try was"$['serviceRequest'][1]['request_id']");
please advise

Thank you
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