Hello. 
I'm trying to make trajectory file in xtd format from the data in xyz format.
I write pearl script like below, but output file says that " number of total frames 0"
Can I ask the reason why this error is made and how to solve this problem ? 
Thanks.

Following is the script.
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#!perl

use strict;
use Getopt::Long;
use MaterialsScript qw(:all);

# Set xtd file name and the path of 'Trajectory' directory
my \$xtd_name="R400.xtd";
my \$directory="C:/Users/Admin/Documents/Materials Studio Projects/FreeVolume_Files/Documents";
my \$xyz_name="movieconf.xyz";

my \$xtddoc = Documents->New("R400.xtd");
my \$xyzdoc = Documents->Import(\$directory."/".\$xyz_name);

\$xtddoc->Trajectory->AppendFramesFrom(\$xyzdoc,Frames(Start=>1, End=>10));

my \$trajectory = \$xtddoc->Trajectory;
print " number of total frames = ", \$trajectory->NumFrames;

for (my \$i=1; \$i<\$trajectory->NumFrames; \$i++){
    \$trajectory->CurrentFrame = \$i;
    print "Current Frame is ", \$trajectory->CurrentFrame;
}
\$xtddoc->Close;