I don't see where you're opening the Workbook containing the macro



Syntax

expression.Run (Macro, Arg1, Arg2, Arg3, Arg4, Arg5, Arg6, Arg7, Arg8, Arg9, Arg10, Arg11, Arg12, Arg13, Arg14, Arg15, Arg16, Arg17, Arg18, Arg19, Arg20, Arg21, Arg22, Arg23, Arg24, Arg25, Arg26, Arg27, Arg28, Arg29, Arg30)
expression A variable that represents an Application object.
Parameters

Name Required/Optional Data type Description
Macro Optional Variant The macro to run.

This can be either a string with the macro name, a Range object indicating where the function is, or a register ID for a registered DLL (XLL) function.

If a string is used, the string will be evaluated in the context of the active sheet.
Arg1–Arg30 Optional Variant An argument that should be passed to the function.