Qualtrics: Pipe largest value of a multiple choice question which allows more than one response

I have a multiple choice question that is simply this:

Which of the following years did you participate (select all that apply)? 2019 2020 2021 2022 2023

A later question asks:

Relative to ${e://Field/largestYear}, how would you rate the following?

So clearly, I want only the highest selected year in the prior question to be piped into the second question as largestYear.

This is the jscript attached to the first question:

Qualtrics.SurveyEngine.addOnload(function() {
    // Wait until the respondent has interacted with the question
    this.questionclick = function(event, element) {
        // Initialize max value
        var max = 2019;
        // Loop through selected choices
        jQuery("#"+this.questionId+" .ChoiceStructure tbody tr").each(function() {
            // Check if choice is selected
            if (jQuery(this).find(".Selected").length > 0) {
                // Retrieve numerical value of choice
                var value = parseFloat(jQuery(this).find("td:first").text());
                // Update max value if necessary
                if (value > max) {
                    max = value;
                }
            }
        });
        // Set the embedded data with the largest value
        Qualtrics.SurveyEngine.setEmbeddedData('largestYear', max);
    }
});

The resulting imbedded data in question two always turns out to be equal to the assignment in the jscript line var max = 2019 no matter what (numeric) value I put into that statement. I have no experience coding java and have no experiencing debugging under Qualtrics, but I assume the line var value = parseFloat(jQuery(this).find("td:first").text()) is the problem. So I tried to recode the responses, so that it is a numbered list from 1 to 5, and that did not work, and I tried variable naming - figured, what the heck? It can't hurt at this point.

I'm hoping someone here has some thoughts on what I'm doing wrong. I tried asking this on Qualtrics Community, but it seems to have locked me out for too many log in attempts.

Any thoughts will be appreciated. Steve

I eventually got this question posted on the Qualtrics user group, where a poster suggested the following code that was able to accomplish this task based on the ordering of the choices - from earlier to later years:

Qualtrics.SurveyEngine.addOnload(function() {
    this.questionclick = function(event, element) {
    Qualtrics.SurveyEngine.setEmbeddedData('RecentYear', this.getQuestionInfo().Choices[this.getSelectedChoices().last()].Text);
    }
});