datatype, command and stored procedures

I'm trying to use an UPDATE stored procedure call by Command and I'm getting:
Microsoft OLE DB Provider for SQL Server error '80004005' The precision is
invalid.

This must be related to the number field(s), but I don't see where I can
change the precision.

Also, where can I find a cross reference to show what these numbers represent?
200,1,255

thanks

rsPubUpdate.Parameters.Append rsPubUpdate.CreateParameter("@Title",
200,1,255,rsPubUpdate__Title)
rsPubUpdate.Parameters.Append rsPubUpdate.CreateParameter("@Artist",
200,1,255,rsPubUpdate__Artist)
rsPubUpdate.Parameters.Append rsPubUpdate.CreateParameter("@Genre",
200,1,50,rsPubUpdate__Genre)
rsPubUpdate.Parameters.Append rsPubUpdate.CreateParameter("@GroupLevel",200,
1,50,rsPubUpdate__GroupLevel)
rsPubUpdate.Parameters.Append rsPubUpdate.CreateParameter("@Writers",
200,1,255,rsPubUpdate__Writers)
rsPubUpdate.Parameters.Append rsPubUpdate.CreateParameter("@Publisher",
200,1,50,rsPubUpdate__Publisher)
rsPubUpdate.Parameters.Append rsPubUpdate.CreateParameter("@Royalty",
6,1,8,rsPubUpdate__Royalty)
rsPubUpdate.Parameters.Append rsPubUpdate.CreateParameter("@Ownership",
131,1,9,rsPubUpdate__Ownership)
rsPubUpdate.Parameters.Append rsPubUpdate.CreateParameter("@Comments",
200,1,8000,rsPubUpdate__Comments)
rsPubUpdate.Parameters.Append rsPubUpdate.CreateParameter("@ID",
131,1,9,rsPubUpdate__ID)


CREATE TABLE [bls2000].[Publishers] (
[Title] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
[Artist] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
[Genre] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[GroupLevel] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Writers] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Publisher] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Royalty] [money] NULL ,
[Ownership] [numeric](18, 1) NULL ,
[Comments] [varchar] (8000) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[ID] [numeric](10, 0) IDENTITY (1, 1) NOT NULL
) ON [PRIMARY]
GO

The first number is the data type of the parameter. Here's a reference for the
data type enum:
http://www.w3schools.com/ado/prop_type.asp#datatypeenum

The second number is the direction. 1 = in, 2=out, 3=in/out, 4=return value

The third number is the size of the parameter in bytes.

Try setting the precision on your two NUMERIC parameters (type 131)
rsPubUpdate.Parameters("@Ownership").Precision = 18
for example.

I tried the following and now get a Type Mismatch error. Royalty is a MONEY
field and Ownership is FLOAT field. Does that make a difference?
thanks

rsUpdate.Parameters.Append rsUpdate.CreateParameter("@Royalty", 6,
1,8,varRoyalty).Precision = 18
rsUpdate.Parameters.Append rsUpdate.CreateParameter("@Ownership", 131,
1,9,varOwnership).Precision = 18

Don't set the precision on your Royalty field. Type 6 is MONEY when length=8
and SMALLMONEY when length=4. The precision on MONEY is 19 (and you don't have
to set it, type 6 will be sufficient), so setting it to 18 will cause a type
mismatch error.