Introducing variables in a notification task - OIC Process builder

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Hi guys!

Is it possible to enter process variables in a notification task?

In a human task, you can use templates for the notifications and you can add variables, using this format: 

 ----- HTML CODE ---------
                    {{#payload}} 
                    {{#altaArticuloFormulario}}
                        <td valign="top">{{descripcionArticulo1}}</td>             
                    {{/altaArticuloFormulario}}           
                    {{/payload}}

-------HTML CODE--------

However, in a notification task you can not use template (at least as far as I know). So I use like a expression mode plain text, and I try use the same code from the template. OIC interprets correctly  the html code but not the process variables. If I use like a expression mode simple, I can add the variables but I can not add HTML code.