Illegal Character in Acrobat Script

Hello,

I'm very new to javascript and I'm working with a form to hide fields according to which layers are selected.

There are 5 layers in this form each with about 30 fields per layer. I'm using the framework of a script that works in another form. I received help from a coworker to create the other form.

In this form I am basically just updating the field names. When I input a sample section of the script into the new form the error "SyntaxError: illegal character 84: at line 85" showed up. The line reads 

this.getField(“JKP1”).display=display.hidden;

I've re-typed it but it still doesn't work. What is character 84? Any help will be greatly appreciated.