jdtls runtime settings are empty

[jeusdi]

Here my neoconf.json file:

{
  "lspconfig": {
    "jdtls": {
      "java.configuration.runtimes": [
        {
          "name": "JavaSE-17",
          "path": "/home/jcabre/.sdkman/candidates/java/17.0.10-tem",
        },
        {
          "name": "JavaSE-11",
          "path": "/home/jcabre/.sdkman/candidates/java/11.0.22-tem",
          "default": true
        }
      ]
    }
  }
}

I'm trying to change jdt runtime using JdtSetRuntime command, see here.

As you can see, I', getting this message:

No runtimes found in 'config.settings.java.configuration.runtimes'. You need to add runtime paths to change runtimes.

I'd also like get what are current jdtls settings. How could I get jdtls settings?

Any ideas?