How to trigger an on-click event

[ms87173]

We have a data driven application. We receive the markdown in the data from the back-end, however we need to trigger a post call when clicked on the link coming from it. I added a span in our markdown and added on-click event to trigger our function here is the snippet from it

## Agree and Submit
<br>
<br>
Please read both the <span class="btn-link" on-click =  "acknowledgement()">Banking Account Terms and Conditions </span> and the <span class="btn-link" on-click =  "acknowledgement()">Read before signing </span> section of this application. You may also print, download or email a copy of each for your accounts.  

these forms are generated dynamically so I can't hard code the link. but when ngx-md generates it, it removes the on-click from it. Is there a way for me to accomplish this?
we are using angular 6