[LAD] sending atoms to LV2 plugin with LVTK

Hi, I'm new to audio programming, and new to LV2 and LVTK. I managed to build the LVTK examples from sources. Now I'm trying to figure out how I can send a simple text message from my UI to the plugin (it will be used for speech synthesis). First question: In the ttl, can I just add an atomPort with a type other than sequence, like this: [ a atom:AtomPort , lv2:InputPort ; lv2:index 3; lv2:symbol "text"; lv2:name "Text"; atom:bufferType atom:String ; ] Second question: How do I send a string over this port? I suppose I need to wrap it into an LV2_Atom_String somehow. However, I always end up receiving MIDI data in my plugin. Third question: In a Synth plugin, how do I handle events other than MIDI note on and off (which have both their own specialized methods)? Which method should I overwrite to react on the strings coming in over my atomPort? Any pointer to a solution would be nice! Best wishes, Ulrich