Hello, and thank you for reading.
Prestashop Version: 1.7.8.7
I'm trying to do my own meta seo preview for learning, and I could easily manage to override the emplacement of the default one. But I can't manage to get twig to recognize my variable, saying it doesn't exist. But the variable show in context:
The variable is showing in the context, from the error. But can't be see by Twig. And the variable is being given to twig when I render the template. 
I searched a lot of solution in the PrestaShop documentation who's mostly empty for this case of figure, and I been searching on google or with developers since 5 days now and I'm just stuck at the 'giving Twig my variable" step... Could someone see where the problem could occur ? Or if I'm doing something bad ?
Thanks you for having read that ! I really hope a solution could come from this topic
