vue-web-component-wrapper

I am trying to pass a list of items to a web-component but internally it seems to have converted it to a String... ?? So for example in the code below I wish to pass two properties: a 'msg' (String) and an 'items' (Array). Unfortunately when I try to access the props inside the VueWebComponent code I find: msg = "Hello" items = "[object Object],[object Object]"** Any help much appreciated! This is the code for the VueWebComponent.vue