const CheckSource = async function(AttId, symbolId){

//creates the get parameters
    var SourceGetParams = Helper.returnGetOptions(`SignalValues/${symbolId}/${AttId}`);

//send the get request and waits for responce
    await Helper.sendRequest(SourceGetParams).then((res, body) => {

//parses the response, prints the correct value, but returns "undefined"
        var response_body = JSON.parse(res.body);
        var value = response_body.API_Signals[0].RawValue
        console.log(value);
        return Promise.resolve(value);

//error handling
    }, (error) => {
        console.log('error sending source get request:', error);
        return Promise.reject('There was an error with the fusion request.');
    }).catch((error) => {
        console.log('Source sendRequest promise error:', error);
        return Promise.reject('There was an internal error sending the request.');
    }); }

CheckSource(<Att_ID string here>, <Symbol_ID string here>).then((data)=>{
    console.log(data)
});

False //(this is the expected output from the conslole.log() in the async function)

undefined //(this is the console.log() after I called the function)