Dynamic XML File Source Name - SSIS - BIDS - Visual Studio

I have an data import which downloads an xml file each day.  So each day I will have a different file name.  Today the file name will be "test_20151104.xml".  Tomorrow the file name will be "test_20151105.xml".  I have a variable defined  with an expression of:

"test_" + (DT_WSTR, 10)@[User::DATE] + ".xml"

The next step is to load that xml file into the database.  However, In the dataflow task, in the XML Source Editor, I set the Data access mode to "XML File from variable" and then select the User::Var_FileName where the dynamic file name is stored.

I receive a validation error message that "test__.xml" was not found and the package will not run.

The variable will be set before the XML task executes, but it is not available at before I start the package execution.

Is there a way I can use a dynamic file source in the xml task editor?
Brent LipniskisAsked:
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Brian CroweDatabase AdministratorCommented:
I believe you want to set DelayValidation to True for that step otherwise it is trying to evaluate the existence of the file during compile.

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