as I can get the value of a cell in a grid?

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#1

as I can get the value of a cell in a grid?..

I need the “archivo” column value

{
container:“grid_container”,
rows:[{
id:“gridGrabaciones”,
view:“grid”,
select:true,
datatype:“json”,
fields:[
{ id:“uniqueid”, label:“ID”, width:“100” },
{ id:“hora”, label:“Hora”, width:“100”,},
{ id:“ani”, label:“ANI”, width:“100” },
{ id:“dnis”, label:“DNIS”, width:“100” },
{ id:“archivo”, label:“URL”, width:“100” }
]
}]
}

#2 
var value = $$('gridGrabaciones').item('row_id').archivo

Where row_id - id of row, from which you need to take a value.