Report Builder Filter Not Like Wildcard

Hello.  I am brand new to SSRS/Visual Studio and am trying to filter a dataset field that is Not Like a value with a wildcard in the Dataset Properties-Filters area.  I can easily get the Like expression but I want the comparable Not Like expression to exclude the following names from my report, but there isn't a Not Like operator:

Expression:  PtLastName
Operator:     Like
Value:          TEST*

I want to EXCLUDE the following last names in my report:  TEST, TEST9, TEST142

I have my varchar field as "rtrim(dbo.PT.lst_nm) AS PtLastName" in the dataset.