| Condition | Error Code | Error Message |
|---|---|---|
| Index is not a non-negative integer that is in-range. | -11 | Variable $VarName has invalid value $Value. |
| Count is not a positive integer. | -11 | Variable $VarName has invalid value $Value. |
| Index is empty. | -12 | Variable $VarName has empty value. |
| Count is empty. | -12 | Variable $VarName has empty value. |
| ListVariable is empty. | -12 | Variable $VarName has empty value. |