Sketchup Component Behavior -

i create component definition:

sucomponentdefinitionref comp_def = su_invalid; sucomponentdefinitioncreate(&comp_def);  sucomponentbehavior behavior; behavior.component_always_face_camera = true;  sucomponentdefinitionsetbehavior(comp_def, &behavior);  sumodeladdcomponentdefinitions(model, 1, &comp_def); 

i creating model sugeometryinputref, can use sugeometryinputfacesetfrontmaterial since mapping texture. use suenititesfill. filling enitites sumodelgetentities. how can add component behavior model?

i used following code create instance. not want. pauses before opens model , waits me click places @ origin. not face camera.

    sucomponentdefinitionref comp_def = su_invalid;     sucomponentdefinitioncreate(&comp_def);      sucomponentbehavior behavior;     behavior.component_always_face_camera = true;       sucomponentdefinitionsetbehavior(comp_def, &behavior);      sumodeladdcomponentdefinitions(model, 1, &comp_def);      sucomponentinstanceref instance = su_invalid;      sucomponentdefinitioncreateinstance(comp_def, &instance);      //sustringref name = su_invalid;     //sustringcreatefromutf8(&name, "always face camera");      suentitiesaddinstance(entities, instance, null);