Retrieving Trend Data via periods.lp

[hocine]

I have a file app.json 

Code:

{
  "id": "compteur4multi",
  "title": "Compteur Multi-énergies",
  "version": "1.0.0",
  "author": "Schneider Electric",
  "description": "Calculs d'autoconsommation et d'autonomie photovoltaïque",
  "category": "energy",
  "tags": ["energy", "photovoltaic", "consumption", "monitoring"],
  "icon": "icon.svg",
  "main": "index.lp",
  "config": "config.lp",
  "permissions": {
    "storage": true,
    "trends": true,
    "groups": true,
    "scripts": true
  },
  "files": [
    "index.lp",
    "config.lp",
    "style.css",
    "compteur4multi.js",
    "icon.svg",
    "api/compute.lp",
    "api/config_save.lp",
    "api/periods.lp",
    "api/diag.lp",
    "libs/compteur4multi.lua",
    "libs/utils.lua"
  ],
  "dependencies": {
    "lua_modules": ["storage", "trend", "grp", "json"],
    "system_version": ">=2.5.0"
  },
  "installation": {
    "create_resident_script": true,
    "script_name": "compteur4multi_resident"
  }
}