I have startet using ControlP5 for a small 2D landscape generator I'm working on at the moment.

The basic landscape/background is generated with if(mousePressed).

My goal is that there are multiple elements (just simple shapes), that can

be shown/hidden with simple buttons/toggles.

I have tried somethings but am currently stumped.
This is somewhat what the basic structure of the code looks like

2. import controlP5.*;
3. 
   
4. ControlP5 controlP5;
5. 
   
6. ControlWindow controlWindow;
7. 
   
8. boolean lake = false;
9. 
   
10. float ran;
11. 
    
12. void setup(){
13. size(1000, 768);
14. background(255);
15. smooth();
16.   controlP5 = new ControlP5(this);
17.   controlP5.setAutoDraw(false);
18.   controlWindow = controlP5.addControlWindow("controlP5window",205,173,400,500);
19.   controlWindow.hideCoordinates();
20.   
21.   controlWindow.setBackground(color(200));
22.   Toggle lake = controlP5.addToggle("Lake",false,40,40,100,10);
23.   lake.setWindow(controlWindow);
24. 
    
25. }
28.  void draw(){
29.    
30. 
    
31.   if (mousePressed){
32.    if(lake==true) {
33.     noStroke();    
34.     ellipse(230,430,100,200);
35.     fill(255,255,0);
36.    } 
37.   }   
38.  }

I had hoped that the true/false part of the Toggle-function would be what I'm searching for, but if I set boolean lake = true, I can't hide the ellipse.  And if I set it to false it doesn't even show.

What am I missing? Should I look at (controlEvent)?
 
Thank you in advance for any help