I used Transum online logo to create a function that draws a robot. I want to scale the robot by changing the parameters when calling the function but then the arms are detached from the body if I make the robot smaller. Someone suggested I use the tile (~) sign??? but I have no idea how to do this. Any suggestions will be super welcome. Thanks

TO DRAW_RECT :width :height :color  
  SETPC :color  
  PD  
  RT 90  
  FD :width  
  RT 90  
  FD :height  
  RT 90  
  FD :width  
  RT 90  
  FD :height  
  RT 90  
  PU  
END  
  
TO ROBOT :size  
  ; Draw body  
  DRAW_RECT :size :size "blue  
  ; Draw head  
  PU  
  BK :size/2  
  LT 90  
  FD :size/4  
  RT 90  
  PD  
  DRAW_RECT :size/2 :size/4 "red  
  ; Draw left arm  
  PU  
  BK :size/2  
  LT 90  
  FD :size/4  
  LT 90  
  FD :size/4  
  RT 90  
  PD  
  DRAW_RECT :size/2 :size/4 "green  
  ; Draw right arm  
  PU  
  BK :size/2  
  RT 90  
  FD :size/4  
  RT 90  
  FD :size/4  
  LT 90  
  PD  
  DRAW_RECT :size/2 :size/4 "green  
  ; Draw left leg  
  PU  
  BK :size/2  
  LT 90  
  FD :size/2  
  LT 90  
  FD :size/4  
  RT 90  
  PD  
  DRAW_RECT :size/2 :size/4 "green  
  ; Draw right leg  
  PU  
  BK :size/2  
  RT 90  
  FD :size/2  
  RT 90  
  FD :size/4  
  LT 90  
  PD  
  DRAW_RECT :size/2 :size/4 "green  
END