Setting goals

I want to create a goal in my analytics for submitting the form and I inserted this code to the additional settings of my contact form:
<script>
document.addEventListener( ‘wpcf7mailsent’, function( event ) {
ga(‘send’, ‘event’, ‘Contact Form’, ‘submit’);
}, false );
</script>

but google analytics does not receive any information .. Can you please help me out ?

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