using get_url with ansible 2.0.2 to download package

hello,i tried to download a package with get_url ansible,but i have a problem.
The url contain some variables so i wrote like this.

- get_url: url=http://example.com/{{variable1}}/path/{{variable2}}.tar.gz dest=dest/to/path
But i couldn’t get the package.some help please.

check this task if it helps as reference
https://github.com/ac427/my_cm/blob/master/ansible/roles/ansible_jenkins_role/tasks/jenkins_CentOS.yml