Allows cookies to be manually specified in name=value pairs separated by a semicolon.
In general it should not be required to set this property. However, there are many different flavors of OData services. If your solution requires cookies that are obtained outside of the CData Excel Add-In for OData, they can be manually specified here. Specify cookies in name=value pairs separated by a semicolon. For instance: Cookie1=value;Cookie2=value2.