hello
yes its possible .Follow the below steps to do it
1)Create simple widget like below and use the below code in client controller of the widget
In the if loop replace testing with your MVRS internal name and count with your variable back end name where you want to store the count
sum = parseInt(sum)+parseInt(rows[i].your_field_name_to be_summed)
in the above line just replace your_field_name_to be_summed with your field name where your count values to be summed are stored
api.controller=function($scope,$rootScope) {
/* widget controller */
var c = this;
$rootScope.$on("field.change", function(evt, parms) {
var g_form = $scope.page.g_form;
if(parms.field.name=="testing") // replace testing with the your MVRS internal name
{
var rows = JSON.parse(g_form.getValue('testing')); // replace testing with the your MVRS internal name
var sum=0;
for(var i=0; i<rows.length; i++)
{
sum = parseInt(sum)+parseInt(rows[i].your_field_name_to be_summed) // replace your_field_name_to be_summed with your field name where your numbers to be added are stored
}
g_form.setValue('count',parseInt(sum)); // replace count with the variable back end name where you want to store the count of the MVRS rows
}
});
};
2)Then go to your catalog item and create. variable type called "custom" and tag your widget like below in widget field
Then try adding the rows and giving the number in the field and see if its working
Hope this helps
please mark my answer correct if this helps you
