hi, I tried using an extension created by myself using instructions from the xs man pages. I used the extension Mytest2 in the following program. use Mytest2; $b=10; $a = Mytest2::tfun($b,"hello"); print $a, $b; Now, when I run this, it says, Can't find 'boot_Mytest2' symbol in ./blib/arch/auto/Mytest2/Mytest2.sl at try.pl line 2. Can anybody tell me how to get rid of this..? This code is working if i use it from a C code. thanks, jay