If the Custome Views can not delete items?

I make a "custome view" of a User table.

I choose the Delete operation's checkbox.

But when I generated the code and run it.there is no Delete button after I had add many users in that page.

So ,I want to ask if anybody meet the question as me?
I have change the situation just now.and share my way:

1. the first,I add event in the BeforeShowList method .
   
   add the code : $xt->assign("delete_link",true);
   
   then I can saw the Delete Button in List page.
   
   But..... when i choose anyone and want to test the delete.
   
   {I set the debug is true}
   
   I got the SQL: delete from `user` where (id=14) and (1=0)
   
   Where is the (1=0) came from?
   
   I step into the php code.
   
   and finally, In the include/commonfunctions.phpfile at line number:1827.
   
   the function
   
   GetUserPermissions($table=""){
   ......
   if($table=="custome_view_user1")
   
   return "AES";
   }
   
   Haha,The permission is not set to Delete enable, maybe there is a bug? <img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=question&id=12356&image=1&table=forumtopics' class='bbc_emoticon' alt=':)' />
   
   I change it to return "AEDS";
   Everything is ok!
   I removed the $xt->assign("delete_link",true);
   now it is success to delete items in the custome view of user page.
   I use PHPRunner5.0.