extracting variable for specific time from netCDF

Hi,

I want to cut some time from a bid data, using ncread(source,varname,start,count).

for your information,

UCUR_sd

Size: 69x69x45588

Dimensions: J,I,TIME

Datatype: single

Attributes:

long_name = 'Standard deviation of sea water velocity U component values in 1 hour.'

units = 'm s-1'

valid_min = -10

valid_max = 10

cell_methods = 'TIME: standard_deviation'

coordinates = 'TIME LATITUDE LONGITUDE'

_FillValue = 999999

ancillary_variables = 'NOBS1 NOBS2 UCUR_quality_control'

Now if i write, u=ncread(ncfile,'UCUR',[1 1 1],[Inf Inf 44931]); it takes the command as the start time is from the start.

But what should i write if i want cut the time from somewhere middle?

I tried to define index,

ind=find(time>=datenum(2017,02,16,0,0,0)&time<=datenum(2017,02,17,0,0,0))

u=ncread(ncfile,'UCUR',[1 1 ind],[Inf Inf 44931]);

But it is not working. Any helpful suggestion please.