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

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