How are get trends list and them data via HTTP request?

[zebox]

To get trend data, you have to call fetch instead of main.

If I request fetch I get error message: 

Code:

Error: /lib/genohm-scada/web/trends/fetch.lua:0: attempt to index a nil value

Which are parameters need to add to POST or GET request for the url ("http://LM-IP/scada-main/trends/fetch") if I need get list of trends?

I add followoing parameters to POST request for get values of trend 

Code:

data:"{"dates_curr":{"start":{"year":2017,"day":1,"month":3},"end":{"year":2017,"day":17,"month":3}},"id":14,"dates_prev":{"start":{"year":2017,"day":16,"month":3},"end":{"year":2017,"day":17,"month":3}}}"

where "id" - the id of some trend

But I don't know which parameters using for get list of all trends in a system.