Arduin build error

Question

my code on the Arduino

void setup() {
  // put your setup code here, to run once:
 
int pinoMotor = 11; 
int pinoBotao = 12;
int on = 0;
int estadoBotao;

pinMode(pinoMotor, OUTPUT);
pinMode(pinoBotao, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
 
estadoBotao = digitalRead(pinoBotao);
       if (estadoBotao == HIGH) {
            if(on == 1)
            {on = 0;}
       else{on = 1;}

}

if ( on ==1) 
     {digitalWrite (pinoMotor, HIGH);
     }
else {digitalWrite (pinoMotor, LOW);}

delay (100); 

Well, when I compile this code, in the command line state Otao = digitalRead(pinoBotao); message comes out:

'stateBotao' was not declared in the Scope