Serial communication problem !

hello,
i trying control servo motor via serial port. when sending angle, servo not go true angle. problem ?

code: [select]

#include <servo.h>

servo myservo1;
void setup()
{
  myservo1.attach(9);  // attaches servo on pin 9 servo object
  serial.begin(9600);
  serial.println("arduino serial servo control");
  }
 
  void loop()
{
  int angle;
  while(1){
  serial.println("enter servo angle: ");
  if (serial.available() > 0) {  // check serial input
       
    int angle = serial.read(); // read incoming byte:
                    myservo1.write(angle);              // tell servo go position in variable 'pos'
                  serial.print("i received: ");
                  serial.println(angle);                       
                }
  }
}

what indeed. serial prints tell you? sending terminal program?

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