Cosmos DB Throws "Unable to cast object of type 'System.Int64' to type 'System.Int32'" when Calling ContinueDialogAsync

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Version

Microsoft.Bot.Builder v4.4.0

Describe the bug

When executing line

await dialogContext.ContinueDialogAsync(cancellationToken)

System.InvalidCastException is thrown with details “Unable to cast object of type ‘System.Int64’ to type ‘System.Int32’”

To Reproduce

Steps to reproduce the behavior: Using CosmosDB storage Execute the first message, works fine Upon the second message, calling ContinueDialogAsync(…) fails

Expected behavior

Give a clear and concise description of what you expected to happen.

Screenshots

If applicable, add screenshots to help explain your problem.

Additional context

Using MemoryStorage does not have this problem Works fine in version 4.3.0

[bug]

[sgellock]

we’re cutting a 4.4.1 release of the C# SDK to address this issue.

[EricDahlvang]

https://github.com/Microsoft/botbuilder-dotnet/blob/master/libraries/Microsoft.Bot.Builder.Dialogs/WaterfallDialog.cs#L112

        // For issue https://github.com/Microsoft/botbuilder-dotnet/issues/871
        // See the linked issue for details. This issue was happening when using the CosmosDB
        // data store for state. The stepIndex which was an object being cast to an Int64
        // after deserialization was throwing an exception for not being Int32 datatype.
        // This change ensures the correct datatype conversion has been done.
        var index = Convert.ToInt32(state[StepIndex]);