If Claim is an existing object that has a name, then this should work. The concatenation is correct syntax-wise. As long as you are setting the Hint's text to what you have here, it should work.
If it isn't working, check the Output Window for any errors.
If there aren't any errors, try setting the hint's text to purely a string to see if it is your hint that is the problem.
If it correctly set the hint's text to the string, then try setting it to purely Claim.Name. If that doesn't work, then Claim is the problem. Make sure the object Claim has a property called Name and that Name isn't blank.
If none of that works, I'm not entirely sure.