Solved
How to set in xml code cq_dialog a default model value to Touch UI select Model Path ?

I want to restrict to author select only the Model that I want, like FAQ Model to this component, how can I do that?
Here belows there's the ModelPath xml code
<modelPath
jcr:primaryType="nt:unstructured"
sling:resourceType="granite/ui/components/coral/foundation/form/select"
emptyText="Select"
fieldDescription="Content Fragment Model from which to build the list."
fieldLabel="Model"
name="./modelPath">
<datasource
jcr:primaryType="nt:unstructured"
sling:resourceType="core/wcm/components/contentfragmentlist/v2/datasource/models"/>
</modelPath>