"Invalid procedure call or argument" VBScript calling C# COM method -

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i have vbscript app calling com-registered c# objects. able pass in com object com call, receive either primitive or com object back, can't both @ same time! if try retrieving value call while passing in com object, exception "invalid procedure call or argument"

dim foo set foo = server.createobject("foo") foo.setproperty(1)  dim bar set bar = server.createobject("bar") dim return set return = bar.do(foo)

if last line bar.do(foo) works fine.

also, whether 

set return = bar.do(foo)

or 

return = bar.do(foo)

causes same error in case.

my com classes classes methods exposed, , implementing interface. i'm getting error dealing ints, longs, , strings.

i'm bit rusty in area if method returning int or string shouldn't code read:

return = bar.do(foo)

instead of 

set return = bar.do(foo)

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