Problem with json using dot ( . ) in the variable

[thiagofdso]

I have a json like this.
{
"version": "4.0.0",
"gauges": {
"jvm.memory.heap.max}": {
"value": 134850064
},
"jvm.memory.heap.used}": {
"value": 26
}
}
}
When i try to use this confi yaml, it try to find a jvm variable, not jvm.memory.heap.max. How can i make it work?

modules:
default:
metrics:
- name: jvm_memory_heap_used
path: "{$.gauges.jvm.memory.heap.used}"
type: value
help: Heap Usado
- name: jvm_memory_heap_max
path: "{$.gauges.jvm.memory.heap.max}"
type: value
help: Heap Maximo