Bug 102436 Date/time value not stored correctly in report design
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
{
			return;
		}
		IChoiceSet choiceSet = getFormatChoiceSet( getSelectedDataType( ) );
		if ( choiceSet == null )
		{
			formatCategroy = formatPattern = null;
		}
		else
		{
			if ( !loading || inputParameter.getFormat( ) == null )
			{
				if ( DesignChoiceConstants.PARAM_TYPE_STRING.equals( getSelectedDataType( ) ) )
				{
					formatCategroy = choiceSet.findChoice( DesignChoiceConstants.STRING_FORMAT_TYPE_UNFORMATTED )
							.getName( );
				}
				else if ( DesignChoiceConstants.PARAM_TYPE_DATETIME.equals( getSelectedDataType( ) ) )
				{
					formatCategroy = choiceSet.findChoice( DesignChoiceConstants.DATETIEM_FORMAT_TYPE_UNFORMATTED )
							.getName( );
				}
				else if ( DesignChoiceConstants.PARAM_TYPE_DECIMAL.equals( getSelectedDataType( ) )
						|| DesignChoiceConstants.PARAM_TYPE_FLOAT.equals( getSelectedDataType( ) ) )
				{
					formatCategroy = choiceSet.findChoice( DesignChoiceConstants.NUMBER_FORMAT_TYPE_UNFORMATTED )
							.getName( );
				}
				formatPattern = null;
			}