Function + Objects

I have been studying JS for a week only. I don't know what I'm missing:

Define a function checkProperty() that will use the following object passed as an argument to print the output in the console.

The output: if the property isForSale equals to true, the expected output to the console should be: The owner, John Doe put the home for sale! The property has 4 amenities.. In the other case, we should see the following: The home in Happy St no. 123 is not for sale.

I only get the second sentence printed out. Why?

 owner: {
   firstName: 'John',
   lastName: 'Doe',
   age: 44
 },
 isForSale: true,
 sqrm: 120,
 address: {
   street: 'Happy St',
   number: 123,
   city: 'Miami',
   state: 'FL',
   country: 'US'
 },
 amenities: ['pool', 'tennis court', 'private parking', 'yard']
};

function checkProperty(someObject){
 if(someObject.isForsale === true){
   console.log(`The owner, ` + property.owner.firstName + ` ` + property.owner.lastName + ` put the home for sale! The property has` + property.amenities.lenght + ` amenities.`)}else{
  console.log(`The home in ` + property.address.street + ` no. ` + property.address.number + ` is not for sale.`)
 }
}

checkProperty(property);```


Output: "The home in Happy St no. 123 is not for sale."