If a power adds a damage roll to a static damage power, is bonus damage applied?

Question

In dnd 4e, if I have a +4 weapon and use concussive response and brutal barrage (+7 con), how much damage is applied?

Answer 1

Extra damage is not a "damage roll"

As per here:

First of all, extra damage is not a damage roll, even though you roll damage. Counter-intuitive I know, but the term "damage roll" refers exclusively to the damage listed in the power, so there is no way to "add" a damage roll to a power.

Therefore, it would do 7+1d6 damage, despite character builder potentially erroring out and giving you bonus damage as per here.