Behavior - NumberException error when setting a single list field

[Vivian Escalante]

Hello all, 

So when I set a custom field's option to "No" for a single list I get this error. Any idea why? I have other single list custom fields and I'm able to set them with Yes/No options easily.

Thanks. 

customfield.setFormValue("No")

java.lang.NumberFormatException: For input string: "No"
	at com.onresolve.jira.groovy.user.FormField.getOptionString(FormField.groovy:329)
	at com.onresolve.jira.groovy.user.FormField.getValue(FormField.groovy:229)
	at com.onresolve.jira.groovy.user.FormField$getValue$9.call(Unknown Source)
	at Script1.run(Script1.groovy:251)