---
source: kcl/src/simulation_tests.rs
description: Error from executing invalid_member_object.kcl
---
KCL Semantic error

  × semantic: Only arrays and objects can be indexed, but you're trying to
  │ index a number
   ╭─[2:5]
 1 │ num = 999
 2 │ x = num[3]
   ·     ───┬──
   ·        ╰── tests/invalid_member_object/input.kcl
   ╰────