i was not able to configure the filter response(ex.order,etc) of " FIR decimation" block in simulink according to the default "decimate(X,R)" or(X,R,N) in script

The above FIR decim filter is used for decimation process. So how to configure the filter of the block from the filter response page according the decimate(x,r) or decimate(x,r,n) or decimate(x,r,n,'FIR') or .... by default there is a 8th order chebyshev fir low pass filter in decimate(x,r). how we set the response in the block even if we provide the 'n-order', no option for specify the order in the block filter response.

script:

% 5MHz carrier

fs = 7.68;

tdw=LTE5_3_1.waveform;

%% SHOLDER REMOVING

shape5_out = conv(tdw,shape5);

%% DECIMATION

decim_out = decimate(shape5_out,2);

workspace: