problem when launching hspice from matlab

The launching code as follow
system('E:\Synopsys\Hspice_F-2011.09\BIN\hspice techchar.sp > techchar.out');

After simulating, techchar.out is not created.
I don't know why.

**************************************************************************************************************
original code is from ee214b murmann

% /usr/class/ee214b/hspice/techchar.m
% HSpice toolbox
addpath('/usr/class/ee214b/matlab/hspice_toolbox')
% Parameters for HSpice runs
VGS_step = 25e-3; VDS_step = 25e-3; VS_step = 0.1;
VGS_max = 1.8; VDS_max = 1.8; VS_max = 1;
VGS = 0:VGS_step:VGS_max; VDS = 0:VDS_step:VDS_max; VS = 0:VS_step:VS_max;
W = 5; L = [(0.18:0.02:0.5) (0.6:0.1:1.0)];
% HSpice simulation loop
for i = 1:length(L)
for j = 1:length(VS)
% write out circuit parameters and run hspice
fid = fopen('techchar_params.sp', 'w');
fprintf(fid,'*** simulation parameters **** %s\n', datestr(now));
fprintf(fid,'.param width = %d\n', W*1e-6);
fprintf(fid,'.param length = %d\n', L(i)*1e-6);
fprintf(fid,'.param subvol = %d\n', VS(j));
fprintf(fid,'.param gsstep = %d\n', VGS_step);
fprintf(fid,'.param dsstep = %d\n', VDS_step);
fprintf(fid,'.param gsmax = %d\n', VGS_max);
fprintf(fid,'.param dsmax = %d\n', VDS_max);
fclose(fid);
system('/usr/class/ee/synopsys/hspice/F-2011.09-SP2/hspice/bin/hspice techchar.sp >!...
techchar.out');
end
end