The ForEach Loop Enumerator is Empty - SSIS Error when executing through CMD via VBA

Question

I am currently working on a SSIS package that is to be triggered through CMD via VBA (Access). All that the package does is read a bunch of files from a folder and upload them into a table in SQL Server. The tricky part comes is that this folder location from
which the package is to read the files is dynamic.
I figured out a way to make it dynamic, by using variables
I have used the following variables:
"Directory" against DIRECTORY in COLLECTION>>EXPRESSIONS in the ForEachfile Enumerator,
"FilePath" (With Index 0) in the Variable Mappings
PROBLEM : As the final link in the chain, I have used following to be triggered from VBA
dtexec \f "C:\Desktop\SSISAppend.dtsx" /Set "\Package.Variables[User::Directory].Property[Value];C:\Desktop\AppendFiles"
When I try to execute the package using the above command, it gives out the error
Code : 0x8001C004
Description: The For Each File Enumerator is empty. The For Each File enumerator did not find any files that meatched the file pattern, or the specified directory was empty.
But, when I run the package from MS VisualStudio 2008, the package runs fine, takes the location of the file assigned to the variable "Directory". 
All help is appreciated

Answer 1

Where are you executing the package from? You're giving an aboslute path so this will work only if package as well as the folder is in the same machine from which you execute the above code. Otherwise you need to use UNC path.
Another thing to check is what login is executing the command and you need to ensure it does have access to the directoty path as well as to the path where package resides.
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