Use environment var in external iteration json data

where are you using console.log to print it ? you should chack console and see what was actually send . It should be resolved correctly

My prerequest:

pm.environment.set("hello","123")

pm.environment.set("hi",JSON.stringify({

    "mean": 1710.2180279856818,

    "count": {"mean":"{{hello}}"},

    '5MinuteRate': 34.74630977619571,

    '15MinuteRate': 11.646507524106095

}))

RequestBody

make sure to select raw>json

console: (see whats actually send)