Syntax

INSERT(array, index, item)

Usage examples
Formula INSERT(["a", "b", "c"], 1, "x")
Output 1
[
2
"a",
3
"x",
4
"b",
5
"c"
6
]
Copy
Formula INSERT(["a", "b", "c"], -2, "x")
Output 1
[
2
"a",
3
"b",
4
"x",
5
"c"
6
]
Copy