Help with Wialon Remote APi route search

HI all!

Not sure if this is the right place to ask but i am completely lost on why this param json doesnt return any items

{           
    "spec":{
       "itemsType":"avl_route",
       "propName":"*",
       "propValueMask":"*",
       "sortType":"sys_name",
       "propType": "property",
       "or_logic": 1
    },
    "force": 1,
    "flags":513,
    "from":0,
    "to":0
}

i've also tried many different combinations of params but nothing returns any items. this is the response i get every time

{
    "searchSpec": {
        "itemsType": "avl_route",
        "propName": "*",
        "propValueMask": "*",
        "sortType": "sys_name",
        "propType": "property",
        "or_logic": "1"
    },
    "dataFlags": 513,
    "totalItemsCount": 0,
    "indexFrom": 0,
    "indexTo": 0,
    "items": []
}

My goal is to be able to search routes by unitId and time interval. i also have NO idea how to do this.. i have seen and understand your multicriteria search but i have no idea which fields to use to filter routes for a specific unit and between two points in time.

i have also watched a youtube vid by Diana but she never touches on routes unfortunately so im stuck.

Hoping for a fast reply!

Thanks,
Alen

Edit: Devs, i have created another post in the subforum Working with Wialon.. delete that one i guess, this should be in this subforum