Adding checkbox combo thru XML

I have seen solutions on how to add a checkbox combo on the toolbar when adding a text field thru Javascript, but how would it be done thru XML?

Hello
You can use ready dhtmlxRibbon with combo and set comboType property
dhtmlx.com/docs/products/dhtmlxR … m_xml.html

<item type="combo" label="Select" comboType="checkbox" inputWidth="120" name="mycombo"> ... </item>

This would be great. Thanks a lot!

You are welcome!