The InsertActions parameter specifies actions to perform on each document before insertion. To specify more than one action use a comma-separated list, or set InsertActions0, InsertActions1, and so on. The possible actions are:

META Add a new field to the document.
LUA Run a Lua script.
Type: String
Required: No
Configuration Section: TaskName
Example: InsertActions0=META:MyField=MyValue
See Also: IngestActions