jQuery Grid Plugin - jqGrid

hello,

I want create a search forms as discribe at page 123 in doc pdf.

In editoption of my colmodel, I want retrieve data from my "json" file. for example:

{name:'cod_banque',search:false, index:'cod_banque', edittype:'select, editoptions: {value:'my_data_from_json_file'}'},

I don't want write:

{name:'branch', sortable:false, editable:true, edittype:'select', 
       editoptions:{value:' :;1:Head Office;2:International Office;
       4:Northwest Region;3:Regional Office;5:SouthEast Region'}},

is it possible?

thank you for your help?

Regards and Have a good weekend!!

Aurore