Is there a custom validation script to check boxes based upon answers in a form field in Adobe DC?

I want different checkboxes checked based upon the answers in the form field.

if (event.value = “Yes”){this.getField(“More Information”).value = “Yes”;}
if (event.value = “No”){this.getField(“More Information”).value = “No”;}
if (event.value = “Unsure”){this.getField(“More Information”).value = “Unsure”;}

I'm getting a SyntaxError: illegal character 1:at line 2

Thank you!