Customization Series

[ketandholakia]

I want to add a suffix at the end of the invoice number.
I customization it with Sequence, delimiter, and Series.
I want to Invoice No as 001/23-24
Sequence and delimiter are working 001/
but the Series at the end not working as 23-24, other setting work for series like 2324, 23_24

Any trick to get rid of this issue?