getting the date pulled from the LMS on a certificate

Hi everyone! 

I need to get the date on a certificate. I tried the javascript available on the Javascript best practice discussion but it doesn't work with my LMS (Crossknowledge) but it works fine in review 360... 

I've uploaded the file here. It's fine if he/she writes their name because it will be for an onboarding course and the learner won't have an account on the LMS yet.

Can you help me? 

Thanks! 

Have a great day!