Basic JavaScript - Comparison with the Greater Than Or Equal To Operator

my test for testGreaterOrEqual (0)
my test for testGreaterOrEqual (9)
Are not working . Please help me out

Your code so far

function testGreaterOrEqual(val) {
  if (val >= 21) {  // Change this line
    return "20 or Over";
  }

  if (val >= 10,11) {  // Change this line
    return "10 or Over";
  }
  if(val==9) {
  return "Less than 10";
  }

  

  
}
  
testGreaterOrEqual(10);
testGreaterOrEqual (0);
testGreaterOrEqual (9);

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Challenge: Basic JavaScript - Comparison with the Greater Than Or Equal To Operator

Link to the challenge:

This is not a valid comparison