It's only the Alpen LIGHT cereal bars that can be used as a HexB choice.
The standard Alpen bars have syns on both red & green. Here's a selection of syn values for one standard Alpen bar:
Strawberry Cereal Bars with yogurt, 6 syns
Apple & Blackberry bars with yogurt, 6 syns
Fruit & Nut cereal bar, 5 1/2 syns
Fruit & Nut cereal bar with chocolate, 6 1/2 syns
Raspberry Cereal Bars with yogurt, 6 syns
Hope this helps.