user dash '-' character instead of dot '.' in outline numbering

hello fans,
is it possible to use dash character as separator character in tools>outline numbering ??? there is such label with no editable field to set that, is it a but or just a place holder?

i use libre4.1.1.2 linux mint 15


Duplicate of Set Separator char in outline numbering

in this case i will have 1. and 1.1. and 1.1.1. and … , but i want to have 1. , 1-1. , 1-1-1. and so on… i mean how i can use “-” between numbers, not before and after count.

See also:

Set Separator char in outline numbering

Yes, in this dialog there is two separator, before the count and after.
After is after the number and before the title.

Is it what you want ?

i mean separator between numbers (not after or before count ) , i want have outlines like 1-1-2-1-5. , ("-" between numbers)