AMAZING, thank you very much !!!!!
it works as I want 
could you tell me where can learn ruby? I´m a nobbie on it
I only had to modify the uppercase A and put as discos.is_a?
This is JSON result and how it shows on kibana
{
"_index": "ilohost",
"_type": "_doc",
"_id": "G8wE3YgBytP59SAoyF4M",
"_version": 1,
"_score": 1,
"_source": {
"NicEnableStatus": 2,
"@version": "1",
"InterfaceStatus": 2,
"disk26": 2,
"SelfTestErrors": 0,
"disk15": 2,
"@timestamp": "2023-06-21T08:14:18.019Z",
"disk02": 2,
"disk12": 2,
"disk14": 2,
"disk06": 2,
"BatteryPercentCharged": 0,
"disk25": 2,
"disk17": 2,
"disk10": 2,
"disk11": 2,
"disk24": 2,
"disk23": 2,
"disk03": 2,
"PendingAlerts": 2,
"disk04": 2,
"disk16": 2,
"disk22": 2,
"disk05": 2,
"tabladiscos": [
