hello dwanthny, thank you so much, i have no glue WHY it WORKS, but it does
i changed it a little to get spaces:
{author_sort}/{series:|| -} {series_index:re(^(\d)(\.|$),0\1\2)|| -} {title} - {authors} - {isbn}
@chaley
u mean i can shorten the template?
i mean it does already what i want it to do

so what would be the advantage from changing the thing with 're'?
dont even know what it means