How to customize link properties when creating ArangoSearchView in ArangoJS

I try to create an ArangoSearchView in arangojs, but I don't know how to set up view properties. Here is my code:

const link = {
    includeAllFields: true,
    fields: { val: { analyzers: ["text_en"] } },
    storeValues: "val"
};
const view = _db.view(`${_viewName}`);
await view.create({ links: {mergeDB : link } });

However, I got this result:

As the error says the issue it's with the storeValue field

According the docs the value should be either none (default) or id

storeValues (optional; type: string; default: "none")

This property controls how the view should keep track of the attribute values. Valid values are:

none: Do not store value meta data in the View.
id: Store information about value presence to allow use of the EXISTS() function.

Not to be confused with storedValues, which stores attribute values in the View index.

Note that there is other parameter called storedValues but it's a top level field (same level as links)