Need help grabbing embedded data

I'm trying to pull embedded data from the survey flow tab but I can't seem to grab it. The purpose of the code is to grab the string, separate it into integers, then change the integers before recombining them into a string again. I've searched around and my code looks the same as others but it's still not working, any help would be greatly appreciated, here's the code.

`

/*Place your JavaScript here to run when the page is fully displayed*/

//record current date/time as startTime
var startDate = new Date();
//pull the pracTime variable from qualtrics
var theString = "${e://Field/pracTime]";// <--- This is the part that isn't working
//theString = "'0,0,0,FU,0,0,0,0,0,0'";
console.log(theString);
//split the string into an array
var allTimes = theString.split(",");
console.log(allTimes);
console.log("anything");
`