Bug 132786 Value2 should be cleaned after convert operator from between to equal in highlight rule.
Description: Value2 should be cleaned after convert operator from between to equal in highlight rule. Steps to reproduce: 1. Insert a data. 2. Set highlight rule in Property Editor. 2 between 1 and 3, color blue. 3. Save the report 4. Modify highlight rule, change to 1 equal 1, color blue. 5. Save the report, see generated xml source. Expected result: In xml source, value2 should be cleaned in highlight expression. Actual result: In xml source, value1 is 1 and value2 is 3.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/HighlightRuleHandle.java
}
	/**
	 * Sets the style of the top line of the border.
	 * 
	 * @param value
	 *            the new border top line style
	 * @throws SemanticException
	 *             if the value is not one of above.
	 * @see #setBorderBottomStyle( String )
	 */
	public void setBorderTopStyle( String value ) throws SemanticException
	{
		setProperty( HighlightRule.BORDER_TOP_STYLE_MEMBER, value );
	}
	/**
	 * Returns the operator of the highlight rule. The returned value is defined
	 * in <code>DesignChoiceConstants</code> and can be one of:
	 * <ul>
	 * <li><code>MAP_OPERATOR_EQ</code>
	 * <li><code>MAP_OPERATOR_NE</code>
	 * <li><code>MAP_OPERATOR_LT</code>
	 * <li><code>MAP_OPERATOR_LE</code>
	 * <li><code>MAP_OPERATOR_GE</code>
	 * <li><code>MAP_OPERATOR_GT</code>
	 * <li><code>MAP_OPERATOR_BETWEEN</code>
	 * <li><code>MAP_OPERATOR_NOT_BETWEEN</code>
	 * <li><code>MAP_OPERATOR_NULL</code>
	 * <li><code>MAP_OPERATOR_NOT_NULL</code>
	 * <li><code>MAP_OPERATOR_TRUE</code>
	 * <li><code>MAP_OPERATOR_FALSE</code>