I know this is a two-month old post, but in case you still need or anyone else that finds this thread needs this solution, I know one more way how to do it with glyphs, but it only works with consumable items, when they are consumed.
Namely, Glyph of Fortification is linked with a spell which is further linked with an upgrade with the same name. You can set the upgrade so that it gives attack range bonus in Object Editor under its effects. Additionally, you can also set the glyph to not be consumed when its picked, so that it can be consumed by right-clicking manually. Then, you can also change anything else you want in the glyph, its spell and its upgrade, but it must stay consumable for this to work.