You will not be able to specify a range of reference numbers if you selected more than one Transaction Type.

Maximum of 8 digits (1-99999999). Enter the ending reference number of the range of transactions you want to transfer. Reference numbers can be found on the Verification Lists, the Detail Work-In-Process Report, Transaction File List or a Draft Statement.

The button can be used to open a Lookup window that allows you to view a list of transactions and select any transaction by double-clicking it.