Hy @nelson_d
Try this code
frappe.ui.form.on('Child Doctype', {
a: function(frm,cdt,cdn) {
table_ttl(frm,cdt,cdn);
auto_cal(frm);
},
b: function(frm,cdt,cdn) {
table_ttl(frm,cdt,cdn);
auto_cal(frm);
}
});
function table_ttl(frm,cdt,cdn){
var row = locals[cdt][cdn];
frappe.model.set_value(cdt,cdn,"c",row.b+row.a)
}
I hope it’s working
Thank You!