template_variables.json type htmltag incorrect tagname

[ukwiz]

When setting up a template variable in template_variables.json with a display type of htmltag, the tagname is not set, and the default "div" is used.

Code: "name":"3colhead2", "caption":"3 column heading 2", "type":"text", "description":"centre heading", "display":"htmltag", "output_properties":{ "tagname":"h4", "tagid":"", "class":"", "style":"", "attrib":"" }