VBScript: setTimeout with Array??

Can someone help me with this problem?
I originally posted it in ASP, VB script, but was told I my have better luck here. So here it goes.

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window.setTimeout "startAdd " & i & "," & iCount & "," & iNum & "," & iPfx, 2000
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iNum and iPfx are both arrays.
I get a type mismatch error whenever I call startAdd like this.

If I call it normally(startAdd i,iCount,iNum,iPfx) everything works fine.