Stored Procedure Error converting data type nvarchar to int.

I created the following stored procedure:
@CustomerID int,
@OriginCountryID int,
@DestinationCountryID int,
@ServiceID int,
@PackageTypeID int,
@Markup int OUTPUT

SELECT @Markup =(Markup)
FROM tblMarkups
WHERE (CustomerID = @CustomerID) AND
            (OriginCountryID = @OriginCountryID) AND
            (DestinationCountryID = @DestinationCountryID) AND
            (ServiceID = @ServiceID) AND
            (PackageTypeID = @PackageTypeID)

I get the error when when executing.  "Error converting data type nvarchar to int".    All fields in the table are int datatype.

DECLARE @Markup int
EXECUTE spGetMarkup @CustomerID = 124001, @OriginCountryID = OriginCountryID, @DestinationCountryID = DestinationCountryID, @ServiceID = ServiceID, @PackageTypeID = PackageTypeID, @Markup = @Markup OUTPUT
SELECT @Markup
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Phil DavidsonCommented:
The nvarchar message may stem not from the table but from the EXECUTE statement.  Maybe you cannot post publicly the actual integer values, but there are character strings in the EXECUTE statement that you posted:

@OriginCountryID = OriginCountryID, @DestinationCountryID = DestinationCountryID, @ServiceID = ServiceID, @PackageTypeID = PackageTypeID,

Did you remember to substitute the variable names without the @ signs with integers?

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ExpressMan1Author Commented:
Thanks Phil.

That was it.  Should have been @OriginCountryID = 1, DestinationCountryID =2, etc
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Microsoft SQL Server 2008

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