Include 3.5e Sneak Attack to macro without it multiplying on a critical hit.

I'm new at using Roll20 and trying to set up a macro for my rogue/swashbuckler. I am using the D&D3.5e Character Sheet v2.7.7 09/09/16 by Diana P. sheet. I have all of my weapon stats and various macros added to my weapon. I then added an "Ability" macro under the Attributes & Abilities tab. It looks like this: &{template:DnD35Attack} {{pcflag=true}} {{name=@{character_name}}} {{subtags=Sneak Attacks with Handaxe}} {{attack1=Handaxe: [[ @{weapon1attackcalc} ]] }} {{critconfirm1=Crit?: [[ @{weapon1attackcalc} ]] }} {{fumbleroll=Fumble: [[ d20 ]] }} {{damage1=Damage: [[ @{weapon1damage} +1d6 [Sneak Attack] ]] }} {{critdmg1=+ [[ @{weapon1crit} ]] }} How do I change this though so that it does not multiply the sneak attack damage on a critical hit?