Dealing with large customer lists as a parameter in Crystal

Hello,
Im trying edit a report that uses dynamic prompts for the selection criteria..
I want to be able to select one customer at a time and be able to show all there orders over time. Seems relatively simple but the issue is that the client list is huge, say a couple thousand..

So what happens is crystal builds the prompt and shows 5 sections , all of the A;s and a few B's

I think I could do a wildcard type situation but im stumped on the syntax..

So if a user searched for a customer smith maybe they could enter a smi* or sm*?  only issue is Im not sure how to do this..

Name field is a string and the DB is mssql..


Thanks!