jQuery Grid Plugin - jqGrid

hello

I got a problem showing the error message after delete. Im using the navGrid. 

I saw a solution here in the forum to use ajaxEditOptions, but I could not make it to work.

 	{closeAfterEdit: true,closeAfterAdd: true, width:400}, // edit options
	{closeAfterEdit: true,closeAfterAdd: true, width:400,addCaption:"Add"}, // add options
	{closeOnEscape:true, 
	  ajaxEditOptions : { 
		 error : function(jqXHR, textStatus, errorThrown)
		 {
		 alert('Some error text');
		 }
	  }		
	}, // del options
	{closeOnEscape:true,position:'right'} // search options

Am I doing it right?

Thanks