Graph is showing information that I dont want to be shown

[Manuel174102]

Hello!

I have the following graph, and you can see the gray on top of each year. I want to get rid of that. The grey orders are as '-' classify. I tried using the following but it did not work out : If(Order Type <> '-', sum(amount))

I know I can deselect the option " Include Null Values", but if I do that, the rest of my dashboard will not make sense. 

What can I do? Can I solve this with an if function?

[Lakshminarayanan_J · Accepted solution]

@Manuel174102 

Try Writing the below expression ,

=sum({<Order Type -={"-"}>}amount)

[Manuel174102]

You Rock!! thank u so much!