How to position subtitles with vobsub.dll and avisynth?

[jamest]

I got a divx file with .sub/.idx subtitles which I want to convert to a VCD with permanent sub in lower black bar and my avisynth script with vobsub.dll works, subtitles is visible but how can I change the sub position?

In the .idx file I found this section:
# Force subtitle placement relative to (org.x, org.y)
align: OFF at LEFT TOP
it suggest to me that is the setting to use but I can't figure out its syntax, tried "align: 0,50" did't work.

Help appreciated.

[jamest]

Nevermind, I found the problem.

To change subtitle position the line to change in the .idx file is this one:

# Origin, relative to the upper-left corner, can be overloaded by aligment
org: 0, 50

50 place my subtitles nicely in the black bar.