[amibroker] Filtering on symbol name ?

[gmorlosky]

I am having a problem when using the Filter = in my Explore. I want 
additoanlly use a particuler symbol name, but trying to add on Name() 
= "^GSPC", keeps erroring on syntax.

Error 30. Syntax error
Filter = SumFilter OR MinFilter OR Name() = "^GSPC" ;