Application.Caller

Returns information about how Visual Basic was called

Method of Calling	Whats Returned
A user-defined function in a single cell	A range object specifying that particular cell
A user-defined function from an array formula in multiple cells	A range object specifying that range of cells
Auto_Open, Auto_Close	A string specifying the filename. In Excel this is "[Book2.xlsm]Sheet1"
Macro run from the Macros dialog box	Error 2023

The method Application.Caller does not exist in Word at the moment.

The method Application.Caller does not exist in PowerPoint at the moment.