how convert object[] to VARIANTARG

[bacsumu]

i'm programming in c#
i use embeded webbrowser

-----------------------------------------------------
[return: MarshalAs(Unman agedType.I4)]
[PreserveSig]
int Exec(
ref Guid pguidCmdGroup,
int nCmdID,
int nCmdexecopt,
[In, MarshalAs(Unman agedType.LPArra y)] object[] pvaIn,
[In, MarshalAs(Unman agedType.LPArra y)] object[] pvaOut);
-----------------------------------------------------
IOleCommandTarg et:::Exec( ref Guid pguidCmdGroup, int nCmdID, int
nCmdexecopt,
object[] pvaIn, object[] pvaOut )
{
.....
}

this is some source code

the param <object[] pvaOut> is'll use in VARIANTARG
i want to convert object[] to VARIANTARG

VARIANTARG is catched from
"http://msdn.microsoft. com/library/default.asp?url =/library/en-us/automat/html/e305240e-9e11-4006-98cc-26f4932d2118.as p"

i want this in c#
http://thecodeproject.com/atl/popupblocker.asp

catch javascript error from webbrowser

so convert object[] to VARIANTARG

how can i do?