{
    "coverage": {
        "country": "ru",
        "city": "Grozny"
    },
    "data": "http://geoportal95.ru:6080/arcgis/rest/services/%D0%90%D0%B4%D1%80%D0%B5%D1%81%D0%BD%D1%8B%D0%B9_%D0%BF%D0%BB%D0%B0%D0%BD_zd/MapServer/7",
    "type": "ESRI",
    "language": "ru",
    "conform": {
        "number": "Nomer_doma",
        "street": "Name_UL",
        "city": {
            "function": "regexp",
            "field": "Adres",
            "pattern": "^(?:.*)?,(?:.*)?,(.*),(?:.*)?$"
        },
        "district": "Raion",
        "postcode": "P_Indeks",
        "type": "geojson"
    }
}

{
    "coverage": {
        "country": "ru",
        "city": "Grozny"
    },
    "data": "http://geoportal95.ru:6080/arcgis/rest/services/%D0%90%D0%B4%D1%80%D0%B5%D1%81%D0%BD%D1%8B%D0%B9_%D0%BF%D0%BB%D0%B0%D0%BD_zd/MapServer/7",
    "type": "ESRI",
    "language": "ru",
    "conform": {
        "number": "Nomer_doma",
        "street": "Name_UL",
        "city": "г. Грозный",
        "district": "Raion",
        "postcode": "P_Indeks",
        "type": "geojson"
    }
}

Set Grozny city to be constant
Set Grozny city to be constant