Create new Financial Dimension and use on form

Perform Below steps.

a)      Open AOT>>Data Dictionary>>Extended Data Types type/select DimensionDefault and drag it in table which will be used further as a datasource in form where you have to show the Dimensions. Do Remember  that you have to drag it in table not at DataSource.
b)     Open Table in the Data, Dictionary which will be used as a Datasource, and create a realtion with table DimensionAttributeValueSet .
c)      Right Click the Relations. Select ‘New Realation’.  Select properties. Set name as DimensionAttributeValueSet, Table as DimensionAttributeValueSet.
d)     Right Click the this newly created Relation DimensionAttributeValueSet, select New>>Normal.
e)      Set the properties of Normal Realtion as:  Field=TheFieldwhichwillsaveDimensionNumberInYourTable
Source EDT= DimensionDefault
Related Field=RecId

2.      Verify that the table that will hold the foreign key to the DimensionAttributeValueSet table is a
data source on the form(the one on which you have to show dimensions).
3.      Create a tab that will contain the financial dimensions control. This control is often the only
data shown on the tab because the number of financial dimensions can be large.
4.   set properties of Tab as under
a)      Set the Name metadata of the tab to TabFinancialDimensions.
b)     Set the AutoDeclaration metadata of the tab to Yes.
c)      Set the Caption metadata of the tab to @SYS101181 (Financial dimensions).
d)     Set the NeedPermission metadata of the tab to Manual.
e)      Set the HideIfEmpty metadata of the tab to No.
       5.  Override the pageActivated method on the new tab
public void pageActivated()
{
    dimDefaultingController.pageActivated();

    super();
}
      6.   Override the following methods on the form.
class declaration
public class FormRun extends ObjectRun
{
    DimensionDefaultingController dimDefaultingController;
}
init (for the form):
public void init()
{
    super();
    dimDefaultingController=DimensionDefaultingController::constructInTabWithValues(
      true,
      true,
      true,
      0,
      this,
      tabFinancialDimensions,
      "@SYS138487");

    dimDefaultingController.parmAttributeValueSetDataSource(myTable_ds,
    fieldstr(myTable, DefaultingDimension));
}
    7.      Override the following methods on the form data source
            public int active()
{
    int ret;
    ret = super();
    dimDefaultingController.activated();
    return ret;
}
public void write()
{
    dimDefaultingController.writing();
    super();
}
public void delete()
{
   
    super();
  dimDefaultingController.deleted();
}