1.9.1.1 In parameters

For in parameters,

• For a parameter with the string attribute, the value can be a Lisp string.
• For a parameter of COM type BSTR , the value can be a Lisp string.
• For a parameter whose type is an array type or a pointer type with a size_is attribute, the value can be a Lisp array of the appropriate rank and dimension.
• Otherwise, the value should match what the FLI would generate for the parameter's type.

LispWorks COM/Automation User Guide and Reference Manual - 19 Dec 2011