SSIS Import Using MDX Error

Hello,

I'm trying to write MDX to import data from SSAS into SQL database.

Here's my simple MDX, however I'm getting SSIS Error:

Error Message

[OLE DB Source [23]] Error: SSIS Error Code DTS_E_OLEDBERROR.  An OLE DB error has occurred. Error code: 0x80040E05.
[SSIS.Pipeline] Error: OLE DB Source failed the pre-execute phase and returned error code 0x80040E05.

MDX:selectnonempty{[Measures].[TotalCount]}oncolumns, non empty{([Person].[Email].children)}onrows from [HC]

Also, I'm getting this warning below? 

[OLE DB Source [23]] Warning: The OLE DB Source.Outputs[OLE DB Source Output] references an external data type that cannot be mapped to a Data Flow task data type. The Data Flow task data type DT_WSTR will be used instead.

Do I need to assign nvarchar for both TotalCount & Email?

Any help is appreciated!