How to get constants value from nested array about ncform HOT 1 CLOSED

module.exports = {
  title: 'Choose one',
  icon: 'mdi-checkbox-multiple-marked-circle',
  class: 'item',
  // ==== SCHEMA =====
  schema: {
    type: 'object',
    properties: {
      sectionChoices: {
        type: 'object',
        properties: {
          choices: {
            type: 'array',
            items: {
              type: 'object',
              properties: {
                name: {
                  type: 'string',
                  ui: {
                    label: 'Name',
                    placeholder: 'Name',
                  },
                  rules: {
                    required: true,
                  },
                },
                label: {
                  type: 'array',
                  value: ['', ''],
                  items: {
                    type: 'string',
                    ui: {
                      label: 'dx: {{$const.choice[0].lang[i].code}}',
                    },
                  },
                  ui: {
                    label: 'Label',
                    showLegend: false,
                    widgetConfig: {
                      autoIdxToLabel: false,
                      disableAdd: true,
                      disableDel: true,
                      disableReorder: true,
                      disableItemCollapse: true,
                      disableCollapse: true,
                    },
                  },
                },
              },
              ui: {
                label: 'Name',
              },
            },
            ui: {
              showLegend: false,
              noLabelSpace: true,
              widgetConfig: {
                showOneIfEmpty: true,
              },
            },
          },
        },
        ui: {
          legend: 'Choices',
          showLabel: false,
          label: '',
          widgetConfig: {
            collapsed: false,
          },
        },
      },
    },
    globalConfig: {
      constants: { // Global constant configuration, can be accessed by {{$const.userName}}
        choice: [
          {
            lang: [{ code: 'en', label: 'English' }, { code: 'af', label: 'Afrikaans' }],
          },
        ],
      },
    },
  },
}