SSRS, How to add "not like" filter

Hi Experts,

I want to filter out the "user name " starts with "AM", something like the image below. But SSRS does not have not like function. What kind of expression I should write? Thank you.
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ValentinoVBI ConsultantCommented:
This can be done using a creative expression such as this:

=IIF(LEFT(Fields!UserName.Value, 2) <> "AM", true, false)

You'll also need to set your filter type to Boolean and the Value to True.

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tanj1035Author Commented:
Hey, Valentino, you are super!! Thanks!!
ValentinoVBI ConsultantCommented:
Glad to hear you got it to work :)
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