Need some help with a Green Flame Blade Macro - Level 5

Below is the macro that I have for Green Flame Blade. At 5th level the damage of the Green flame blade goes up to 1d8+spell casting modifier. That is not where I am having a problem. That is fairly straight forward. The problem is critical hits.  I know how to add the critical damage normally but this damage is spread over two targets. How to I add the crit damage for that second target? For those not familiar (this is a new wizard archetype from the Sword Coast Adventurer's Guide - Bladesinging tradition), the spell hits the main target of your swing but does fire damage to a target within 5 feet. On a crit both damages (since they are dice rolls) would apply the critical rule of doubling the dice. At 5th level the damage is 1d8+Spell casting modifier+1d8 fire damage to main target and 1d8+spell casting modifier damage to the a second target within 5 feet. The second damage would double as well.  How do I get the macro to critical the second damage to the secondary target? Hope that makes sense.  Here is the current macro I have: &{template:5eDefault} {{spell=1}} {{character_name=Rolen}} {{title=Green Flame Blade}}} {{subheader=Evocation Cantrip}} {{emote=whacks the foul creature with the business edge of his blade.}} {{attack=[[1d20+@{Rolen|global_melee_attack_bonus} + @{Rolen|PB} + @{Rolen|strength_mod} ]]}} {{attackadv=[[1d20+@{Rolen|global_melee_attack_bonus} + @{Rolen|PB} + @{Rolen|strength_mod} ]]}} {{can_crit=1}} {{damage=[[1d8+@{Rolen|global_melee_damage_bonus} + @{Rolen|strength_mod} + 1d8 ]]}} {{critdamage=Additional [[1d8]] smack in face damage and [[1d8]] fire damage}} {{rollname=Effect}}{{roll=On a hit, a different creature within 5 feet of it takes damage equal to [[1d8+@{Rolen|intelligence_mod}]].}}}

I might have answered my own question, I guess I could just add text to the critdamage parameter to add another roll for the secondary target. Any other suggestions?

Unless the secondary damage also involves an attack roll, you're probably best of doing what you suggest by adding an extra line to the bottom or a second template header for the extra damage. &{template:5eDefault} {{spell=1}} {{character_name=Rolen}} {{title=Green Flame Blade}}} {{subheader=Secondary Damage}} {{emote=Target within 5-feet takes damage}} {{Secondary Target=[[1d8+@{Rolen|intelligence_mod}]] Fire }}{{If Crit=[[2d8+@{Rolen|intelligence_mod}]] }} Or something to that effect...

Also for the scaling fire damage replaced the 1d8 with [[(((@{selected|wizard_level} + 1) / 6 + 0.5)-1)d8 + [[@{selected|intelligence_mod}]] + (@{selected|global_spell_damage_bonus}) + 0d0]] Fire and it will scale with your level.

Damage formulae for the SCAG cantrips.