Trouble with JMES Query because of dots in fieldnames

az boards query --id 02187725-f42d-4a44-b787-afc2e52629f8 --query "[0:1].fields" retrieves:

```
[
{
"System.AreaPath": "AreaPath",
"System.Id": 87,
"System.IterationPath": "ProjectName\\Iteration 1",
"System.State": "Active",
"System.Title": "Tasktitle",
"System.WorkItemType": "Task"
}
]
```

I'm trying to retrieve only a list of workitem titles but I'm having a hard time constructing a working jmespath because of the dots used in the fieldnames.

I've tried

az boards query --id 02187725-f42d-4a44-b787-afc2e52629f8 --query "[0:1].fields.'System.Title'"
az boards query --id 02187725-f42d-4a44-b787-afc2e52629f8 --query "[0:1].fields.`System.Title`"
az boards query --id 02187725-f42d-4a44-b787-afc2e52629f8 --query "[0:1].fields.System.Title"
az boards query --id 02187725-f42d-4a44-b787-afc2e52629f8 --query '[0:1].fields."System.Title"'

any clue on how to select only specific fields?

---
#### Document Details

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* ID: d535510f-f15c-3c79-c44d-34b7742a1544
* Version Independent ID: 334f9fc5-2811-f125-4faa-3fb90ec19559
* Content: [az boards](https://docs.microsoft.com/en-us/cli/azure/ext/azure-devops/boards?view=azure-cli-latest)
* Content Source: [latest/docs-ref-autogen/ext/azure-devops/boards.yml](https://github.com/MicrosoftDocs/azure-docs-cli/blob/master/latest/docs-ref-autogen/ext/azure-devops/boards.yml)
* GitHub Login: @rloutlaw
* Microsoft Alias: **routlaw**