Write a string to a BLE Characteristic

I must be being dense here, but I am not seeing how to set a write characteristic for a string using CurieBLE?

If anybody has guidance, I'd be most grateful!

/s

You can see the code the android app pfodDesignerV2 generates for Arduino101

Follow this tutorial http://www.forward.com.au/pfod/BLE/index.html#Arduino101

Thank you @drmpf - perfect!