code: private boolean setValueWithJs(final String componentId, final String value) {
          boolean selected;
          String script = "return (function(){var c  = Ext.getCmp('" + componentId + "'); var record = c.findRecord(c.displayField, '" + value + "');" +
                  "if(record){c.onSelect(record, c.store.indexOf(record)); return true;} return false;})()";
          log.warn("force ComboBox Value with js: " + script);
          selected = (Boolean) WebLocatorUtils.doExecuteScript(script);
          log.warn("force ComboBox select result: " + selected);
          return selected;
      }
docs: this method is used in case normal flow for selection fails
  
  @param componentId ComboBox id so we can use directly js to force selection of that value
  @param value       value
  @return true or false