Limit pathfield to 1 inside a multifield

Hi All,

In my dialog.xml, we have the below :

 <multi
                        jcr:primaryType="cq:Widget"
                        fieldLabel="Page Path"
                        name="./relatedPath"
                        xtype="multifield">
                        <fieldConfig
                            jcr:primaryType="nt:unstructured"
                            xtype="pathfield"/>
                    </multi>

#1]We should be able to restrict the pathfield we can choose to 1 here. 

Any reference/snippet/thoughts on this will be really helpful.