@data items = [
  { "name": "Item 1", "value": 100 },
  { "name": "Item 2", "value": 200 },
  { "name": "Item 3", "value": 300 }
]

@text total = @run [echo "{{items.0.value}} + {{items.1.value}} + {{items.2.value}}" | bc]

@embed {{total}}