vobsub scale doesn't work

[len0x]

When I tried to change scale from 100%,100% to 100%,133% in idx file - subs are not shown at all when using latest VSFilter in avisynth. It seems that everyting below 100% works, but above doesn't. Am I doing something wrong?

[len0x]

Actually I figured out what was wrong - large increment in scale results in hiding of subs in widescreen movies, so you have to adjust vertical positition of subs.