diff --git a/engine/filterhelpers.go b/engine/filterhelpers.go
index 62f4d0654..6870f77ac 100644
--- a/engine/filterhelpers.go
+++ b/engine/filterhelpers.go
@@ -101,3 +101,17 @@ func MatchingItemIDsForEvent(ev utils.MapStorage, stringFldIDs, prefixFldIDs, su
 	}
 	return
 }
+
+// Weight returns weight of the first matching DynamicWeight
+func WeightFromDynamics(dWs []*utils.DynamicWeight,
+	fltrS FilterS, tnt string, ev utils.DataProvider) (wg float64, err error) {
+	for _, dW := range dWs {
+		var pass bool
+		if pass, err = fltrS.Pass(tnt, dW.FilterIDs, ev); err != nil {
+			return
+		} else if pass {
+			return dW.Weight, nil
+		}
+	}
+	return 0.0, nil
+}
diff --git a/utils/dynamicweight.go b/utils/dynamicweight.go
index a9b8f79ea..6020a201f 100644
--- a/utils/dynamicweight.go
+++ b/utils/dynamicweight.go
@@ -32,13 +32,13 @@ func NewDynamicWeightsFromString(s, dWSep, fltrSep string) (dWs []*DynamicWeight
 	if lnDwStrs%nrFlds != 0 { // need to have multiples of number of fields in one DynamicWeight
 		return nil, fmt.Errorf("invalid DynamicWeight format for string <%s>", s)
 	}
-	dWs = make([]*DynamicWeight, lnDwStrs/2)
+	dWs = make([]*DynamicWeight, lnDwStrs/nrFlds)
 	for i := 0; i < lnDwStrs; i += nrFlds {
 		dw := &DynamicWeight{FilterIDs: strings.Split(dwStrs[i], fltrSep)}
 		if dw.Weight, err = strconv.ParseFloat(dwStrs[i+1], 64); err != nil {
 			return nil, fmt.Errorf("invalid Weight <%s> in string: <%s>", dwStrs[i+1], s)
 		}
-		dWs[i/nrFlds] = dw
+		dWs = append(dWs, dw)
 	}
 	return
 }