hello, sorry if this question is naive...

I am starting to study the API and I have a doubt regarding the "interval" query.

I would like to have "range bars", which are bars in which the difference between high
and low is constant.

I have tried to make this request:

HIX,@ESU13,0.25,10,1,TST,,t

my intention was to have bars with a 1 tick interval (0.25 in my case)
but I got this:

TST,2013-07-04 03:10:08,1613.50,1611.50,1612.00,1613.25,26203,2539,
TST,2013-07-04 03:17:35,1613.75,1612.25,1613.25,1612.25,28416,2213,
TST,2013-07-04 03:23:04,1613.75,1611.75,1612.25,1613.75,30861,2445,
TST,2013-07-04 03:28:31,1614.75,1613.25,1613.75,1614.50,34174,3313,
TST,2013-07-04 03:41:58,1615.00,1613.75,1614.50,1614.00,37325,3151,
TST,2013-07-04 03:54:28,1614.75,1613.75,1614.00,1614.00,39682,2357,
TST,2013-07-04 04:12:03,1614.50,1613.50,1614.00,1614.25,42289,2607,
TST,2013-07-04 04:31:04,1614.50,1612.75,1614.25,1613.50,45089,2800,
TST,2013-07-04 04:49:16,1614.25,1613.25,1613.50,1614.00,47958,2869,
TST,2013-07-04 04:51:09,1614.00,1613.75,1613.75,1613.75,48162,204,
TST,!ENDMSG!,

And clearly those bars have not a 0.25 tick interval fixed.

Sorry, I come from eSignal where I put "0.25R" as an interval and it worked.

Is there some corresponding string for a range bar or do I have to "build" them
from tick by tick data?

Thanks

Hello, unfortunately we do not support range bars within the feed so you will need to request regular tick data and build the range bars within your application.

thank you very much.

it is not really a problem for us, but in this case I am sure about it.