Hi,

also you can solve it for debit or credit values, i.e. as follows:

var model = apex.region("test_ig").widget().interactiveGrid("getViews", "grid").model;

var totAmount = 0;
var vSign = parseFloat(-1);

model.forEach(function(r) {
var actionType = model.getValue(r,"ACTION_TYPE").v;
var v_jdAmount = parseFloat(model.getValue(r,"JD_AMOUNT"));

if (!isNaN(v_jdAmount)) {
if (actionType == 'C') totAmount += v_jdAmount;
if (actionType == 'D') totAmount += -1*v_jdAmount;
console.log("it is "+ actionType + " " + v_jdAmount);
}

});
$s('P33_TOTAL',totAmount);

thank you