The change of the potentiometer is supposed to change the LED to red, yellow, and green. This only emits red. What is wrong with the code/circuit?

int potval=0; int val=0;

void setup() { pinMode(3, OUTPUT); pinMode(6, OUTPUT); Serial.begin(9600); }

void loop() { potval=analogRead(A0); val=map(potval,0,1023,0,255); Serial.print(potval); if(val=340 && val

DIGITAL(PWN ~) O UNO ARDUINO POWER ANALOG IN