How can I add meta tags in a subloaded page?

Questions
1

I need to add meta tags to a sub page that I load. Its an .asp page and in order for Facebook pixels to work I need to have meta tags in that page.

I have added the FB init code in my js file so it runs when the page loads.

!function(f,b,e,v,n,t,s)
  {if(f.fbq)return;n=f.fbq=function(){n.callMethod?
  n.callMethod.apply(n,arguments):n.queue.push(arguments)};
  if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';
  n.queue=[];t=b.createElement(e);t.async=!0;
  t.src=v;s=b.getElementsByTagName(e)[0];
  s.parentNode.insertBefore(t,s)}(window, document,'script',
  'https://connect.facebook.net/en_US/fbevents.js');
  fbq('init', 'xxxxxxxxxxx');
  fbq('track', 'PageView');
fbq('track', 'ViewContent');

I have tried to add the meta tags with asp but the Fb code is not reading them.
So is there a way to add the or do I need to change the router to use componentUrl instead?