How to use NCVHDL to dump fsdb file?

Dear all,
Has anyone use NCVHDL to dump fsdb file?
I have tried many times, but it doen't work.

My procedure as below,

1. At WINNT environment, I set LD_LIBRARY_PATH=C:\Novas\Debussy53v6
\share\PLI\nc_vhdl\WINNT

2.At my run.f, I add novas.vhd which is offered from NOVAS

3.At my test pattern, I adds several vhdl codes as below
use work.novas.all
---
---
---
process
begin
fsdbDumpfile("./simdata.fsdb");
fsdbDumpvars(0, "test_pattern");
wait;
end process;

Is my procedure correct?
Anyone could help me? I have tried it several days.
I will appreciate your any suggestion.


BR,
Eddie