Fetching characters from a variable string

I have a TicketNo in this format:
00345-4-7-0201
In the above string 02 is a code which can be 01,03, etc. I want to fetch the two characters after second hyphen '-'. substr function is difficult because sometimes the size of the string increases by 1. Is there any SQL function available or a separate function need to be written. If the latter, how to write it?

etc. I want to fetch the two characters after second
hyphen '-'. substr function is difficult becauseor third?
this?
SQL> ed
Wrote file afiedt.buf
1 with t as
2 (select '00345-4-7-0201' ticket_no from dual
3 )
4* select substr(ticket_no,instr(ticket_no,'-',1,3)+1,2) from t
SQL> /
SU
02also please post the expected output.
HTH

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Fetching characters from a variable string

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