Printing values to user messages box

[omsahmad]

Very simple question, whose answer I cannot figure out. I am using a CAN bus system to control the speed of my motors. I think it is working but I want to display the value of the encoder in the user messages box. How exactly do I accomplish this? Currently only text is showing up in the messages box.

DriverStationLCD is lcd

my code:

lcd->Printf(DriverStationLCD::kUser_Line3, 1, "Rate: ", shooterOne->GetSpeed);
lcd->UpdateLCD();

Thanks