How can I set the value of Text in the Calendar control if it's not data bound?

I want to combine a few data base fields into the text property in the DayPilot Calendar Lite control so I am not data binding it. I've tried both not data binding that field and I removed data binding from the entire control yet, in the BeforeEventRender event, it keeps telling me that the Set accessor of the property Text is not accessible? What other options do I have to set the field?

Thanks.