Well seems like i ask question and then i end up answering myself after trial and error, (just my personal experience on this forum), if i don’t answer myself question seems like is never answered except the very first question i asked.
Anyway keeping the positive and making sure i can be helpful to someone else who may be looking a workaround for an issue/lack of feature.
here is what i did to get this to do what i needed.
created a global var in the page to hold the data
var myGridData;
created a function called doAfterLoadRefresh
function doAfterLoadRefresh {
myGridData = myGrid.serialize();
}
call this function as
myGrid.load("/mytest_data.json", doAfterRefresh, “js”);
if need to reload data using the var just use following, i tried and it works