icalproperty_set_value(prop,icalvalue_new_text(v));
icalproperty_set_value(prop,icalvalue_new_x(v));
void icalproperty_set_x(icalproperty* prop, const char* v){    icalerror_check_arg_rv( (v!=0),"v");    icalerror_check_arg_rv( (prop!=0),"prop");    icalproperty_set_value(prop,icalvalue_new_text(v));}