1. Insert the Expression+SProMaxPremiumSuperAwesomeness element into your Bubble app
2. Assign the expected result data types and mark which one of them are expected to be lists. Ones that are not defined here will be ignored.

3. Now insert a Javascript expression into the element and make sure it returns a JSON with the following format:

{
"res1":"r1",
"res2":"r2",
"res3":"r3",
"res4":"r4",
"res5":"r5",
"res6":"r6",
"res7":"r7",
"res8":"r8",
"res9":"r9",
"res10":"r10"
}

Here, the field names 'res1', 'res2', etc should be kept the same. The values assigned to them can be the resulting values from your expression/script.

In case you are only returning 2 values (a text and a number) for example, you can return something like this:

{
"res1": 4,
"res2":"my_result_text"
}

And you will be able to access these via the element's states (Expression...'s Result1 and Expression...'s Result2).

It's exactly like the Toolbox plugin's Expression element, except it's on steroids.