Feature request: set a chart's 'Basic Options' dynamically

[queeniema]

For instance, for a Line chart, consider the following options:

{
    "xKey": "time",
    "yKeys": [
        "1.2.3.10",
        "1.2.3.11",
        "1.2.3.12"
    ]
}

It would be great if I didn't have to hard-code the host IP addresses and instead access them from a data set. If the hosts change (e.g., if a host goes down and new one replaces it), then I'd have to manually update this chart (and any other chart that uses the same keys).