please help creating a macro that uses previous roll

I'm just beginning to learn macros. I'm trying to write a macro for a dart trap.  The trap fires 1D4+1 darts and each dart deals 1D3 damage. I understand the Fires [[1D4+1]] darts part but can't figure out the damage.  Is there a way to get it to roll (number of darts)D3 using the previous roll? TIA

$[[0.computed]] Darts hit for [[ [[1d4+1]]d3 ]] Damage You can put that into the default template like this: &{template:default} {{name=Dart Trap}} {{Number of Darts=$[[0.computed]] }} {{Damage=[[ [[1d4+1]]d3 ]] }} Or if you say what game you are playing (D&D 5E, Pathfinder 2E, Call of Cthulu, etc.) and which character sheet you are using (D&D 5E 2014 by Roll20,  D&D 5E 2024 by Roll20, Pathfinder by Roll20, etc.) then there might be a prettier roll template  to display the rolls.