Filter based on a single Attribute value (REST API)

Hi everybody,

Is there a native way to using the REST API to filter the list of ProjectTasks (for example) based on a single Attribute’s value?

I tried a couple things for the $filter. I tried referencing attributes as if it they weren’t an array, like so.

Attributes/AttributeID eq 'SCOPE' and Attributes/Value eq 'Test'

But I got this error: “The parent value for a property access of a property 'AttributeID' is not a single value. Property access can only be applied to a single value”

Then I tried using the `any` lambda, referenced here:

Attributes/any(a: a/AttributeID eq 'SCOPE' and a/Value eq 'Test')

But I got this error: “The method or operation is not implemented.”

Is there any way to do this?