Hi guys, I make some macro on roll20 for Eclipse Phase and i do this for the weapon damages : @{selected|token_name} shoot on @{target|character_name} [[2d10+8-@{target|bar2}-@{selected|weapon_ap}]] This macro works, it's ok but it's not work witch Eclipse Phase rules. The target Bar 2 represent the armor of the cible, and weapon AP the armor penetration. I need to apply the armor and reduce it by the armor penetration, but the result should not go below 0. What kind of command can i add on this line : @{target|bar2}-@{selected|weapon_ap}] ? Regards, Sam