File System Task to rename file giving failed to lock variable error

I have a File System Task in place to rename a file
File Exist in the following folder in this format [This is the Source]
This file would be available daily,with current timestamp
File at source to be renamed to [At Destination,which is the same location as Source]

Here is what has been done so far in File System Task
Is Destination Path Var : True
DestinationVar : User :: DestinationFileName
OverwriteDestination : True

Is Source Path Var : True
Source Var :: SourceFileName

In Expression Tab
Create new Expression
Source : @[User::SourceFileName]+ (DT_STR,4,1253)YEAR(GETDATE()) + RIGHT("0" + (DT_STR,2,1253)MONTH(GETDATE()),2) + RIGHT("0" + (DT_STR,2,1253)DAY(GETDATE()),2) +".txt"
Evaluate Return : C:\A_20081029.txt

SSIS Tab > Variable Created as

SourceFileName  /  String  /  Value : C:\A_
DestinationFileName / String / Value : C:\A.txt

When I execute,I get an error mssg as below

TITLE: Package Validation Error

Package Validation Error


Error at File System Task [File System Task]: An error occurred with the following error message: "Failed to lock variable "C:\A_20081029.txt" for read access with error 0xC0010001 "The variable cannot be found. This occurs when an attempt is made to retrieve a variable from the Variables collection on a container during execution of the package, and the variable is not there. The variable name may have changed or the variable is not being created.".

Error at File System Task: There were errors during task validation.




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Since you are using an expression to create the source, change the Is Source Path Variable to False.
analliahAuthor Commented:
Changed and this is what I get

TITLE: Microsoft Visual Studio
Nonfatal errors occurred while saving the package:
Error at   File System Task: The connection "C:\A_20081029.txt" is not found. This error is thrown by Connections collection when the specific connection element is not found.

Since this is your Source: C:\A_20081029.txt. Does that file exist? If not, is this your destination? Make sure you have the two correct.
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analliahAuthor Commented:
The C:\A_20081029.txt is my Source and it exist in the specified folder.
I would like to rename & overwrite C:\A_20081029.txt to C:\A.txt in the Source folder which is also the Destination folder.
How is this possible ?
Also note, the DestinationConnection and SourceConnection are "connection" objects in the Connection Managers window. Make sure you have a connection for each file.
One thing I suggest is creating defining the DestinationConnection and SourceConnection properties (ConnectionString) using an expression.
I am going to attach an example in the next post. Here is a pic.

analliahAuthor Commented:
I managed to solve it,appreantly I had not set the Expression to the variable and set the EvaluateAsExpression to True.
I have created 3 var now as below.
SourceFileName  /  String  /  [@User::SourceLocation] +(DT_STR,4,1253)YEAR(GETDATE()) +
RIGHT("0" + (DT_STR,2,1253)MONTH(GETDATE()),2) + RIGHT("0" +
(DT_STR,2,1253)DAY(GETDATE()),2) + ".txt"

Sourcelocation  / String /  Value : C:\A_

DestinationFileName / String / Value : C:\A.txt
In the File System task .I have set the following
Destination is : DestinationFileName
Source is : SourceFileName
Thank You for your comments !
Great! I am going to post my instructions for future reference on this subject.

analliahAuthor Commented:
Great documentation.
I'm gonna be keeping this as your method is slightly different them mine.
Thanks For The Help
Question PAQ'd, 250 points refunded, and stored in the solution database.

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