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Basically you cannot generate the JSON at the point in time you call your function.

But you can create an output that generates the JSON.

```const jsonOutput = unresolvedInputs.apply((resolvedInputs) =&gt; createJson(resolvedInputs))```


from your snippet it's not clear which variables are outputs.
if it is `role.arn` then it would be:

Yes - so role is created using `const role = new aws.iam.Role()`

```policy = role.arn.apply(arn =&gt; JSON.stringify({ ... , Principal: arn }))```

Right - thank you.  But doesn’t that just flip the problem around -I now have the role, but how do I get the bucket into that?    do I need a nested bucket.bucket.apply within the `role.arn.apply``?

but you can also resolve multiple outputs at once:

`pulumi.output({ bucket, arn: role.arn}).apply(({bucket, arn}) =&gt; ...));`

Amazin g- thanks you *so much* for your help - super appreciated