Connecting font to drop down menu

Hi all, I have looked all over for an answer and haven't found it. Sorry if it was overlooked. I'm sure this is a super simple item I am missing.

I am trying to create a text layer that changes the font based on a Dropdown Menu control. The below code is the example code that Adobe gives to begin exploring this tool but I always get the error I've placed beneath that.  Can anyone point me in the right direction?

Expression:

var dropDownMenu = thisComp.layer("LayerName").effect("Dropdown Menu Control")("Menu"); 
  
switch (dropDownMenu.value) { 
  
    case 1 : 
  
        text.sourceText.style.setFont("Georgia"); 
  
        break; 
  
    case 2 : 
  
        text.sourceText.style.setFont("Impact"); 
  
        break; 
  
default : 
  
        text.sourceText.style.setFont("Tahoma"); 
  
}

 Error:

Thanks for any help.