[Enhancement] Prevent user from deleting a custom variable called within a custom JS variable

[SW-Vincent]

Currently, when trying to delete :

• a variable called within a tag or trigger ;
• a variable called within a trigger ;

Matomo Tag Manager will prevent you from deleting it, displaying the list of active tag / triggers preventing you from doing so :

BUT there is no such a think when trying to delete a variable that is called within a custom JS variable (which is a much more recent feature).

[snake14]

Hi @SW-Vincent Thank you for surfacing the problem and creating this issue. It definitely sounds like we should look into expanding our variable usage check.