Hi, I have problems in save button overrides but i found the solution and post one.

this is an sample how to override the save button:

//Method to override
public PageReference save()
{
//Logical actions

//Action
update detalles;

//Redirect to same page
PageReference acctPage = new PageReference('/'+ApexPages.currentPage().getParameters().get('idcap'));
acctPage.setRedirect(true);
return acctPage;
}