I'm creating columns from a parameter list Paramlist. This Paramlist might have 1 to 999 objects and its composed by a pair.

This paramList is inside another Structure.

Now I'm trying to bind data based on column name which I fetch from ParamList, but the column name (obj) doesn't seems to update when I try to fetch the value. 

// loop uses any paramlist to know how many columns to create

for (var obj in data[0].ParamsList) {
         myHeadersArray[i] = {
              headerText: obj,         // name
              key: "ParamsList",
              dataType: "object",

              formatter: function (val) {

                 return val[obj]; // key, but name(obj) won't refresh and I'm not able to pass it by function parameter
              }
         };
         i++;
}

Example of a pseudo-structure:

[{

     Alias: 'alias1'

     ParamList: [{

            Param1: 'test',

            Param2: 'test2',

       }]

},

{

     Alias: 'alias2'

     ParamList: [{

            Param1: 'test3',

            Param2: '',

       }]

}...]

My problem is similar to this one http://es.infragistics.com/community/forums/t/72617.aspx 

except that val.Number needs to be val., with obj being dynamic

How can I get the right value?

Excuse my english.

Thank you.