Float value displaying incorrectly in Matrix

Question

Hi,
I am working with a Matrix that uses a Data Table as a Data Source.
The Data Table is populated with a query that combines rows from the AP Invoice and AP Credit Notes tables. 
The matrix columns  all appear to be binding correctly to their respective columns in the Data Table.
The values from the Data Table appear as expected in the Matrix except the open document value (which is a formula in the Data Table source query which subtracts PaidToDate from DocTotal).
Any ideas or advice on what could be causing this value to appear incorrect would be appreciated.
Regards,
Sean

Answer 1

Hi Petr,
I have tried as you suggested but the results are still appearing incorrectly. The link below is a screenshot hosted on imageshack that illustrates the issue.  As you can see the rest of the columns are binding as expected and it is only the "Amount to Pay" column that is not
[Screenshot of issue|http://img232.imageshack.us/img232/3784/uiissue.jpg]
string BaseQuery = @"
                SELECT
                    T0.PayBlock [Blocked],
                    ISNULL(T0.Project,'') [Project],
                    CASE WHEN T0.ObjType = 18 THEN T0.DocNum ELSE NULL END  [Inv No],
                    CASE WHEN T0.ObjType = 18 THEN NULL ELSE T0.DocNum END [Cr No],
                    T0.CardCode [Supplier],
                    T0.CardName [Supplier Name],
                    T0.NumAtCard [Supplier Ref],
                    T0.Comments,
                    T0.DocCur [Currency],
                    T0.DocTotal * CASE WHEN T0.ObjType = 18 THEN 1 ELSE -1 END [Doc Total],
                    T0.PaidToDate [Paid to Date],
                    CONVERT(NUMERIC(19,2),(T0.DocTotal - T0.PaidToDate)  * CASE WHEN T0.ObjType = 18 THEN 1 ELSE -1 END) [Amount to Pay],
                    T1.PayBlock [Hold Reason]
                FROM
                    [{0}] T0                   
                    LEFT OUTER JOIN [OPYB] T1 ON T1.AbsEntry = T0.PayBlckRef
                WHERE
                    ISNULL(T0.Canceled,'N') = N'N'
                     AND T0.DocStatus <> N'C'";
// I then have code to Add additional criteria to the where clause based on parameters...
// The following then unions the base query together for AP invoice and credit note documents
string Query = string.Format(BaseQuery, "OPCH") + Environment.NewLine + "UNION ALL " + Environment.NewLine + string.Format(BaseQuery, "ORPC");
// The code that binds the Matrix is...
NewColumn = DocumentMatrix.Columns.Add(constITEM_AmountToPayColumnId, SAPbouiCOM.BoFormItemTypes.it_EDIT);
                    NewColumn.TitleObject.Caption = "Amount";
                    NewColumn.AffectsFormMode = false;
                    NewColumn.Editable = false;
                    NewColumn.Width = 100;
                    NewColumn.RightJustified = true;                 
                    NewColumn.DataBind.Bind(constITEM_APApprovalForm_APDocuments_DataTableID, constSQL_AmountToPayColumn);