How to set another Date format to List-View in Backoffice

Hi everyone, I'm looking to change the Creation Time's Date format in this list view, how can I change it to dd-MM-yyyy format in -backoffice-config.xml?

I made this list view in the config.xml:

<context type="MyCustomObject" >
   <context merge-by="type" parent="GenericItem" component="listview">
      <list-view:list-view>
         <list-view:column qualifier="code"/>
         <list-view:column qualifier="creationtime"/>
      </list-view:list-view>
</context>
</context>