Print ${variable} inside href link

This is a very strange case

I defined a variable, as RPL with assign tag as alternativaly declaring in the workbook as script, and I'm using it inside the href property of a link:

<a href="http://mysitedomain.com?myparameter=${variable}" target="blank">Print my value ${variable}</a>

It works but only if I don't apply the linktracking. When I activate the linktracking, the value of this variable is always empty.

If I use it out if href property, it works in any case.