jQuery script not working in single page

Hi guys,

I’m trying to implement the following script in a single page (I write the page as a private content):

(function($) { 
$(document).ready(function() { 
	$(':input').blur(function () { 
	      if($(this).val().length > 0) { 
                    dataLayer.push({'event':'abandformcomplet','eventLabel': this.name});
	      } 
	      else { 
                    dataLayer.push({'event':'abandformincomplet','eventLabel': this.name});
	}); 
}); 
})(jQuery);

To do that, I just add a code block into the page and I paste the previous code between <script></script> tags.
My analytics guy tells me that it’s not working and I wanted to ask you guys if there could be a wrong implementation from my side. Maybe this type of code is not accepted in the code block?

Thanks!