LED Poten­tio­me­ter

int ReglerWert;
int REGLER = A0;
int LED = 6;

void setup()
{
  pinMode(LED, OUTPUT);
}

void loop()
{ 
  ReglerWert = analogRead(REGLER); 
  analogWrite (LED, map(ReglerWert, 0, 1023, 0, 255));
}