Unit creator name

Hi, I am trying to find unit creator name + some other info for units.
If I run update_data_flags with flag = 105, I get unit creator ID

wialonurlfix + "/ajax.html?svc=core/update_data_flags&sid=" + eID +
               "&params={" +
                   "\"spec\":[" +
                   "{" +
                       "\"type\":\"type\"," +
                       "\"data\":\"avl_unit\"," +
                       "\"flags\":0x00000105," +
                        "\"mode\":0" +               
                   "}" +
                   "]" +
               "}";

The problem is that I cant match the ID of the creator with none of the users IDs below when I search them like:

https://hst-api.wialon.com/wialon/ajax.html?svc=core/search_items&params={"spec":{"itemsType":"user","propName":"sys_name","propValueMask":"*","sortType":"sys_name"},"force":1,"flags":1,"from":0,"to":0}&sid=

In other words, I know my unit creator ID, how should I find creator name?

Thanks !