Passing PowerBI Parameter To A Stored Procedure

Hello everyone,

I am trying to create parameters within PowerBI so that I can pass the values to the parameters of a stored procedure.

This is the code for the procedure, which uses the AdventureWorksDW2019 database:

CREATE OR ALTER PROCEDURE [dbo].[TestProcWithParameters]
@CustomerKey INT
, @GeographyKey INT
AS
BEGIN

SELECT
[DC].[CustomerKey]
, [DC].[FirstName] + [DC].[LastName] AS [CustomerName]
, [DC].[GeographyKey]
, [DG].[EnglishCountryRegionName]
FROM [dbo].[DimCustomer] [DC]
INNER JOIN [dbo].[DimGeography] [DG]
ON [DC].[GeographyKey] = [DG].[GeographyKey]
WHERE
[DC].[CustomerKey] = @CustomerKey
AND [DC].[GeographyKey] = @GeographyKey;

END;

I'm attaching screenshots of the parameters to this post.

I followed the advice of this post, but I get an error:

https://community.powerbi.com/t5/Desktop/Execute-SQL-Server-stored-procedure-input-parameters-with-power/m-p/640915#M306942

let
Source = Sql.Database("localhost", "AdventureWorksDW2019", [Query="EXECUTE TestProcWithParameters " & CustomerKey & ", " & GeographyKey])
in
Source

Expression.Error: We cannot apply operator & to types Text and Number.
Details:
Operator=&
Left=EXECUTE TestProcWithParameters
Right=1