I realized I posted the wrong code, here it is corrected:
#!/usr/bin/perl
use Win32::API;
my $lpBuffer = "\0" x 64;
my $ZP4StartSession = new Win32::API("ZP4", "ZP4StartSession", [N], P) || die Win32::FormatMessage(Win32::GetLastError);
my $LLHandle = $ZP4StartSession->Call($lpBuffer) ||...