MAking mouse move using Pots

@liudr
the new code is this..but still the mouseY is not working and in the output window the value of mouseY is always 0..I didnt use the robotclass...

import processing.serial.*;
Serial myPort;
int valX,valY;

void setup()
{ background(0);
  size(1024,1024);
  myPort=new Serial(this,Serial.list()[0],9600);
}
void draw()
{ serialEvent(myPort);
    mouseX=valX;
    mouseY=valY;
    fill(225);
    ellipse(mouseX,mouseY,20,20);
   if(mousePressed)
  {background(0);
  }
}
void serialEvent(Serial myPort)
    { 
      String myString=myPort.readStringUntil(124);
      if(myString!=null)
   { 
     myString=trim(myString);
     int inputs[]=int(split(myString,','));
     if(inputs.length==2)
   { valX=inputs[0];
    valY=inputs[1];
   }
  
   }
    }