An unexpected error has occurred!
Error Message:Input string was not in a correct format.
Description:An unexpected error occurred during the execution of the page.
line 0, column 0
Exception Info:
An error occurred when attempting to evaluate a ContentAreaByName function call.
  Function Call: ContentAreaByName("My Contents\Preference Center\Z_AMPScript\Localization")
  See inner exception for details.

System.FormatException:  Failed to convert parameter value from a String to a Int32.
Source:  System.Data