Exporting PDB

Hi,

I am trying to write a script to allow me to convert a .xtd trajectory to a .pdb trajectory. As a first step, I tried to export first frame of the trajectory to .pdb structure file. However, The script goes to completion successfully without creating any output PDB file. How can I address this problem?

Below are the control statements that I am using.

my \\\$trajectory = \\\$Documents{"small.xtd"}->Trajectory;
my \\\$N_frames = \\\$trajectory->NumFrames;
for (my \\\$i=0; \\\$i<\\\$1; \\\$i++){
\\\$trajectory->CurrentFrame = \\\$i+1;
my \\\$doc = \\\$trajectory;
\\\$doc->Export("C:\\\\Documents and Settings\\\\pr0001ai\\\\My Documents\\\\Frame1.pdb");
Documents->SaveAll;
}
Documents->SaveAll;