regular expression for as-path

Hello,

I try to set as-path filter to match every as-path which last as number ending with number 3, for example:

1 2 3

1 2 23

3 33

4 5 6 12333

i try this:

".* .*3"

".*3"

".{0,} .*3"

but with no success, what am i doing wrong ?

thanks for help