JAVASCRIPT only the first function is working on my window.onscroll function

I am new to javascript and I am trying to make both of these functions run at different times depending on the scroll position but only the first function 'myFunction1' is running. Please help.

<script>
 

window.onscroll = function redblob() {myFunction()

function myFunction() {
  if (document.body.scrollTop > 250 && document.body.scrollTop < 1200 || 
  document.documentElement.scrollTop > 250  && document.documentElement.scrollTop < 1200  ) {
    document.getElementById("redblob").classList.add('scale-transition');
  } 

 
  else {
    document.getElementById("redblob").classList.remove('scale-transition');
  }
  
  
}

function myFunction2() {
  if (document.body.scrollTop > 1200 && document.body.scrollTop < 1700 || 
  document.documentElement.scrollTop > 1200  && document.documentElement.scrollTop < 1700  ) {
    document.getElementById("blueblob").classList.add('scale-transition');
 
  } 

 
  else {
    document.getElementById("blueblob").classList.remove('scale-transition');
 
  }
  
  
}
};
  
</script>