property Size has an invalid size: 0 with sproc output param

[Stephen Witter]

I am getting the error:
Parameter 4: '@IDENTITY' of type: String, the property Size has an
invalid size: 0

When trying to execute a sproc with an varchar output. Here is the
asp.net code:

with myCommand.Param eters
.Add("@ECO_DESC RIPTION", SqlDbType.VarCh ar).Value =
txtECODescripti on.text
.Add("@AUTHOR", SqlDbType.VarCh ar).Value =
lstAuthor.Selec tedItem.Text
.Add("@ECO_COMM ", SqlDbType.VarCh ar).Value = ECO_Comments
.Add("@CREATOR" , SqlDbType.VarCh ar).Value = strUSer
.Add("@IDENTITY ", SqlDbType.VarCh ar).Direction =
ParameterDirect ion.Output
end with
myConnection.Op en()
myCommand.Execu teReader(Comman dBehavior.Close Connection)

The error occurs on the @IDENTITY parameter. The datatypes are all
the same (varchar(10)) and I use the same code in other places. The
only difference is this uses a varchar and the others are using int.
When I test it with an integer:

..Add("@IDENTIT Y", SqlDbType.int). Direction = ParameterDirect ion.Output

it works, although I had to set the output in the sproc as a hardcoded
int value.