Invoice sequential number placeholder

Invoice sequential number placeholder

Hello,

My question is this. Is there a placeholder for ONLY the autogenerated sequential number of an invoice number without the prefix?

In my invoice I need display the invoice number and the bank reference number (which has the sequential number in it).

Example:
Invoice prefix: B22
Sequential number: 734
Invoice number: B22734
Bank reference number: 120-734

In the Invoice template I would then do something like 120-%InvoiceSeqNum%

I hope this is clear enough. Thank your for your time.