Bumped into yet another person the other day with similar problem, see my comment and original post in GitHub issue #8144 here. If you search GitHub and probably also Discourse here it at least seems pretty FAQ.
Thoughts?
edit: @Hlopes try to read up on the User Guide page I pointed to in the #8144 link above. When I last tried a while ago it seemed the order of doing stuff in the SQL window versus the Variables panel mattered - some magic is going on behind the scene. I had to start from the beginning a few times.