You can find the length of a <code>String</code> value by writing <code>.length</code> after the string variable or string literal.
<code>"Alan Peter".length; // 10</code>
For example, if we created a variable <code>var firstName = "Charles"</code>, we could find out how long the string <code>"Charles"</code> is by using the <code>firstName.length</code> property.
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## Instructions
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Use the <code>.length</code> property to count the number of characters in the <code>lastName</code> variable and assign it to <code>lastNameLength</code>.