jQuery Grid Plugin - jqGrid

Using this amazing plugin I found 2 issue:

1- I set mtype:"GET" but using toolbar buttons to edit,add,del, always POST method is used.
I found a workariund definining a custom functions on navGrid to call editGridRow and setting mtype on properties.

2- using delGridRow(rwid, { mtype: "GET", afterComplete: saveRow }); always return "H.split not defined", I've tried every types for rwid: string,array, comma separeted string, no way !

I solved it changing the sour ce code at line 8277 (ver. 4.3.1):

 var toarr = [];
if(postdata.constructor.toString().indexOf("Array")==-1)
              toarr = postdata.split(",");

Paolo.