Url encoding issue for Latin accented characters

[capirossij]

VBA Web interface especially AddQuerystringParam of WebRequest object does not encode Latin accented characters. A Get verb to retrieve data based on a string key returns no data though the data exists.
Workaround is to convert these characters all above ascii 127 to their Urlencoded target before to invoke AddQuerystringParam. Then the WebRequest encoding function does not process these characters and the API Get query works.