For adding units into session use events/update_units:

svc=events/update_units&params={"mode":"add",
				"units":[
					    {
						"id":<long>,
						"detect":
							{
								"trips":<uint>,
								"lls":<uint>,
								"sensors":<uint>,
								"ignition":<uint>,
								"counters":<uint>,
								"speedings":<uint>,
							}
					    },
					    ...
				]}

To remove units from session use this signature:

svc=events/update_units&params={"mode":"remove",
				"units":[<long>]}

To deal with “detect” elements (trips, lls, sensors, ignition) you may use sensor id or 0 (to add all sensors according to group stated). For trips it is always 0 to use (there is no trip sensor anyway).

To add all unit sensors please use:

"detect":{"*":0}

1. To add all ingition sensors and other sensors:

"detect":{"ignition":0,"sensors":0}

or

"detect":{"ignition,sensors":0}

2. To all FLS wit id=2 and other sensor with id=6:

"detect":{"lls":2,"sensors":6}

{
    units:<uint>        /* number of units added into session */
}