Primefaces ajax Inplace save data

I have one Problem with the inplace Tag from JSF Primefaces

Here is a code snippet

<h:form >
 <p:inplace id="ajaxInplace" editor="true">  
   <p:inputText value="#{productService.instance.productName}"required="true"     label="text"/>     
 </p:inplace>
</h:form>

after the I press the confirmation button of the ajax inplace i want to store the changed data to my database. i have a method productService.updateInstance() to do this. but how can i call this method after the changes has been made?

thank you and kind regards