Servicedesk Scriptrunner behaviour when using a multiselect field

[Paddy Byrne]

Hi All,

Not sure what I'm doing wrong here... I need to write a behavior that will work in the customer portal of ServiceDesk, that will indicate if at least one value in a standard Jira Multiselect field has been chosen. I can check if any specific value has been selected using the many examples found on this forum, but my main goal here is to simply test if >=1 options have been chosen. Any suggestions?

This is as far as I have gotten, but no joy yet... :

def my_multisel= getFieldByName("multiselect1")
def crField = getFieldById(getFieldChanged())
def int selectedOptions = crField.size()
if (selectedOptions >= 1{
my_multisel.setError("at least 1 item selected") // just used to test
// do more stuff here in real life...
}
else
{my_multisel.clearError()}

 Jira 7.12, Scriptrunner 5.5.9, server install