Well, this is a quite interesting topic @Hossam Ghonim, however, I do not think there is a direct way to use lists with a JavaScript node. But we may use a workaround to send and get lists form JavaScript to OutSystems.

Setting Using Objects

Assuming we have an structure like this, a football player structure:

-- Name
-- Age
-- Sign Date
-- Salary
-- Is Retired

We can convert this Structure to an Object and send it to JavaScript node.

However, I do not recommend this method as the converted object will be very complex. Here is a screenshot for the generated object by this method:

Note that this example is for a simple structure  not a list of structure. In case of a list, it would be more complicated. So this is not a recommended practice.

Setting Using JsonSerialize

Convert your list to a Json string using JsonSerialize, and send this string as an input to the Js node.

In the Js node, convert the Json string to a JavaScript array using "JSON.parse()" method.

However, you may need to use a "reviver" function to parse the dates in the Structure.

Here you can see that the array of objects were created clear. So I recommend this method.

Getting Using JsonDeseralize

Assuming you have an array of the same object, and want to export it from the Js node, we are going to use "JSON.stringify()" method.

You may need to use "replacer" function to adjust any date or datetime so that it may be parsed by OutSystems. To test it, make sure that you date or datetime string value can be parsed by "TextToDate" and "TextToDatetime" in OutSystems.

Before passing the Json string to JsonDeseralize node, make sure that the Structure matches object coming out of the Js node, and that each attribute has the name of the Json attribute defined in it.

You can find a demo for getting and sending lists and objects to Js node, in the file attached.

Hope this was of help.