Data type - URL

Hi All,

Im new to bubble and wondering if someone can help me.
im creating a simple site for my students where they can find topics and click the linka nd go to the source but im not able to do that. i created a data type ‘text’’ and added the link to each topic.

i have it as workflow, when clicked it will open an external website and i put the dynamic data, but eveytime i use the dynamic data, and open a new tab, it opens blank? if i just type the webisite it work but i need it to be dynamic.
can some help me.

thanks!