Excluding values on one specific graph in a sheet

[restrep101]

I have a bar graph in a sheet that has the following categories as a dimension (apple, banana, starfruit, and grapefruit) I want to remove apple and banana from the graph but not from the other graphs on the sheet. I have tried: 

{<FruitName={'starfruit','grapefruit'}>}

which is auto-generated by the set expressions and a bookmark I created. But then I get an error message:

Error in expression

garbage after expression:'='

{<FruitName={'starfruit','grapefruit'}>}

How can I exclude values or dimensions on one graph?

[Or]

That needs to go inside an aggregation function, e.g.

Count({<FruitName={'starfruit','grapefruit'}>} FruitName)

[restrep101]

Thank you! there is no error code anymore but now when I get out of the expression editor it states that it is an invalid dimension

[Or]

It should be a measure...