How to set a length size on a custom field using scriptrunner behaviour

[Basilio]

I'd like to set a size in a custom field. I need allow only 32 characters

[Thanos Batagiannis [Adaptavist] · Accepted solution]

Hi Luis,

Try 

def field = getFieldByName("TextFieldA")
if ((field?.value as String)?.length()  > 32) {
    field.setError("Length of the field should be less than 32 chars")
} else {
    field.clearError()
}

regards, Thanos