How do I set a cookie as a variable in Storyline 360?

We're using SumTotal 18.3, Storyline 360 published as HTML5 ONLY, and IE11. We have a requirement for an acknowledgement form that automatically grabs the name, date, and personnel number of the user who launches it. I can get the name and date just fine. When I use GetStudentID it returns EmpPK instead of EmpNumber. Using Fiddler I've found the data I want is stored in olsUserData as LoginName, but I haven't been able get that into Storyline as a variable. 

Is this possible?

 

Have a great day!

James

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