how to truncate Binding Params in the expression editor in Sandbox

We are trying to put a CPQ link in the sales order screen. The transaction ID is present in the source order field.

we want to truncate the source order field to get transaction id and use in the url.

Is there any way we can use the truncate function in the binding parameter.

we are trying to fetch highlighted information from the source order

Example:

(we are trying to get 9999999 from the source order and will concatenate it with URL )

ABC-123344~9999999