Set UTM data through scripts

Hi! 
Version 11.6 added support for UTM parameters to forms, but is it possible to set these through scripts aswell? 
One of our customers are using crmscript based endpoints where they get data and they would like to set the UTM data that way aswell, so they can make selections on persons to see which endpoint they came from. 

Is it possible to create these rows without an formsubmission and is it via a NSClass or do you have to use the searchengine to insert the row?