Use a spectrum-of-strings attribute in a server

// in the header file:
...
Tango::DevString	ResultSim[100];
...

void TangoMotor::read_ResultSim(Tango::Attribute &attr)
{
  char print_buffer[100]; 

  sprintf( print_buffer, "mot1 %g", attr_PositionSim_write); 
  ResultSim[0] = CORBA::string_dup( print_buffer);
  sprintf( print_buffer, "mot2 %g", attr_PositionSim_write*2); 
  ResultSim[1] = CORBA::string_dup( print_buffer);
  sprintf( print_buffer, "mot3 %g", attr_PositionSim_write*3); 
  ResultSim[2] = CORBA::string_dup( print_buffer);
  
  attr.set_value( ResultSim, 3);  
  
}