0049182: Infinite Decimals Problem

diff --git a/web/org.openbravo.retail.posterminal/app/model/business-object/ticket/actions/AddProduct.js b/web/org.openbravo.retail.posterminal/app/model/business-object/ticket/actions/AddProduct.js
index a9284118c..f4bbe3a2f 100644
--- a/web/org.openbravo.retail.posterminal/app/model/business-object/ticket/actions/AddProduct.js
+++ b/web/org.openbravo.retail.posterminal/app/model/business-object/ticket/actions/AddProduct.js
@@ -41,7 +41,11 @@
       const { product } = productInfo;
       if (lineToEdit) {
         // add product to an existing line
-        lineToEdit.qty += productInfo.qty;
+        lineToEdit.qty = OB.DEC.add(
+          lineToEdit.qty,
+          productInfo.qty,
+          productInfo.product.uOMstandardPrecision
+        );
         setLineAttributes(lineToEdit, productInfo.attrs, productInfo);
       } else if (product.groupProduct || product.avoidSplitProduct) {
         // add product to a new line
diff --git a/web/org.openbravo.retail.posterminal/js/actions/changequantity.js b/web/org.openbravo.retail.posterminal/js/actions/changequantity.js
index 05a45fe8c..92670490b 100644
--- a/web/org.openbravo.retail.posterminal/js/actions/changequantity.js
+++ b/web/org.openbravo.retail.posterminal/js/actions/changequantity.js
@@ -144,7 +144,16 @@
       if (receipt.get('replacedorder')) {
         selectedReceiptLines.forEach(function(line) {
           var oldqty = line.get('qty');
-          var newqty = oldqty + this.calculateToAdd(receipt, oldqty, value);
+          const newqty = OB.DEC.add(
+            oldqty,
+            this.calculateToAdd(
+              receipt,
+              oldqty,
+              value,
+              line.get('product').get('uOMstandardPrecision')
+            ),
+            line.get('product').get('uOMstandardPrecision')
+          );
 
           if (oldqty > 0 && newqty < line.get('remainingQuantity')) {
             cancelQtyChange = true;
@@ -185,8 +194,16 @@
       // Validate based new quantity of the selected line
       if (
         receipt.validateAllowSalesWithReturn(
-          selectedReceiptLine.get('qty') +
-            this.calculateToAdd(receipt, selectedReceiptLine.get('qty'), value),
+          OB.DEC.add(
+            selectedReceiptLine.get('qty'),
+            this.calculateToAdd(
+              receipt,
+              selectedReceiptLine.get('qty'),
+              value,
+              selectedReceiptLine.get('product').get('uOMstandardPrecision')
+            ),
+            selectedReceiptLine.get('product').get('uOMstandardPrecision')
+          ),
           false,
           selectedReceiptLines
         )
@@ -231,9 +248,18 @@
             }
             selectedReceiptLines.forEach(function(line) {
               selection.push(line);
-              var toadd = this.calculateToAdd(receipt, line.get('qty'), value);
+              const toadd = this.calculateToAdd(
+                receipt,
+                line.get('qty'),
+                value,
+                line.get('product').get('uOMstandardPrecision')
+              );
               if (toadd !== 0) {
-                var newqty = line.get('qty') + toadd;
+                const newqty = OB.DEC.add(
+                  line.get('qty'),
+                  toadd,
+                  line.get('product').get('uOMstandardPrecision')
+                );
                 if (newqty === 0) {
                   // If final quantity will be 0 then request approval
                   selection.pop();
@@ -293,8 +319,10 @@
       properties: {
         i18nContent: 'OBMOBC_KbQuantity'
       },
-      calculateToAdd: function(receipt, qty, value) {
-        return receipt.get('orderType') === 1 ? value + qty : value - qty;
+      calculateToAdd: function(receipt, qty, value, scale) {
+        return receipt.get('orderType') === 1
+          ? OB.DEC.add(value, qty, scale)
+          : OB.DEC.sub(value, qty, scale);
       }
     })
   );