попробуйте использовать этот метод
/**
* @Purpose This method will select a value from list of values based on the
* value parameter we pass in the method
* @param element
* --> element of the webpage
* @param value
* --> value we want to select
* @return N/A
*/
public static void selectElementByValue(WebElement element, String value) {
//log.info("Selecting a value");
Select selectitem = new Select(element);
selectitem.selectByValue(value);
}