Bug 146796 Error message pop up if display text contain non-digital char when add next item
Description: In decimal type parameter creation,display type is "list box", Error message pop up if "display text" contain non-digital char when add next item. Steps: 1.Create a new decimal parameter 2.Set display type as "list box" 3.Input one item: value:1, display text:test 4.Input another item: Value:2 Actual result: error message pop up: The display text already exists! Expected result: Input item succussfully.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
}
			}
			else
			{
				allowBlank.setEnabled( false );
				allowNull.setEnabled( false );
			}
			if ( DesignChoiceConstants.PARAM_CONTROL_TEXT_BOX.equals( getSelectedControlType( ) ) )
			{
				doNotEcho.setEnabled( true );
				if ( dirtyProperties.containsKey( CHECKBOX_DO_NOT_ECHO ) )
				{
					doNotEcho.setSelection( getProperty( CHECKBOX_DO_NOT_ECHO ) );
				}
				else
				{
					doNotEcho.setSelection( inputParameter.isConcealValue( ) );
				}
			}
			else
			{
				doNotEcho.setEnabled( false );
			}
		}
		if ( !DesignChoiceConstants.PARAM_TYPE_STRING.equals( getSelectedDataType( ) ) )
		{
			allowBlank.setEnabled( false );
			allowBlank.setSelection( false );
			checkBoxChange( allowBlank, CHECKBOX_ALLOW_BLANK );
		}