How to use variable in content template in ajo

[Mario248]

I am trying to create a variable in HTML and use the value in multiple places in HTML. 

{% let Linktags = "abc,def" %}

<a href="https://www.qatarairways.com/" 
   target="_blank" 
   data-tags="{{ Linktags }}"
   style="color:#8C919B; text-decoration:underline;"
   data-tracking-type="MIRROR_PAGE" 
   data-nl-type="mirrorPage">
   View in browser
</a>

I validated this HTML and there is no syntax issue but it is treating like string  data-tags="{{ Linktags }}". instead of getting value from actual variable. I also tried below syntax but it is not working. Any idea how to make this work ?

<a href="https://www.qatarairways.com/" 
   target="_blank" 
   data-tags="{%=Linktags %}"
   style="color:#8C919B; text-decoration:underline;"
   data-tracking-type="MIRROR_PAGE" 
   data-nl-type="mirrorPage">
   View in browser
</a>