diff --git a/config/rsrparser.go b/config/rsrparser.go
index 4ba1c7d91..0611ca480 100644
--- a/config/rsrparser.go
+++ b/config/rsrparser.go
@@ -167,6 +167,22 @@ func (prsrs RSRParsers) ParseDataProviderWithInterfaces(dP utils.DataProvider) (
 	return
 }
 
+// ParseDataProviderWithInterfaces will parse the dataprovider using DPDynamicInterface
+func (prsrs RSRParsers) ParseDataProviderWithInterfaces2(dP utils.DataProvider) (out interface{}, err error) {
+	for i, prsr := range prsrs {
+		outPrsr, err := prsr.ParseDataProviderWithInterfaces2(dP)
+		if err != nil {
+			return nil, err
+		}
+		if i == 0 {
+			out = outPrsr
+		} else {
+			out = utils.IfaceAsString(out) + utils.IfaceAsString(outPrsr)
+		}
+	}
+	return
+}
+
 // GetIfaceFromValues returns an interface for each RSRParser
 func (prsrs RSRParsers) GetIfaceFromValues(evNm utils.DataProvider) (iFaceVals []interface{}, err error) {
 	iFaceVals = make([]interface{}, len(prsrs))
@@ -311,6 +327,14 @@ func (prsr *RSRParser) parseValue(value string) (out string, err error) {
 	return prsr.converters.ConvertString(value)
 }
 
+// parseValue the field value from a string
+func (prsr *RSRParser) parseValueInterface(value interface{}) (out interface{}, err error) {
+	for _, rsRule := range prsr.rsrRules {
+		value = rsRule.Process(utils.IfaceAsString(value))
+	}
+	return prsr.converters.ConvertInterface(value)
+}
+
 // ParseValue will parse the value out considering converters
 func (prsr *RSRParser) ParseValue(value interface{}) (out string, err error) {
 	out = prsr.path
@@ -361,6 +385,26 @@ func (prsr *RSRParser) ParseDataProviderWithInterfaces(dP utils.DataProvider) (o
 	return prsr.parseValue(utils.IfaceAsString(outIface))
 }
 
+// ParseDataProviderWithInterfaces will parse the dataprovider using DPDynamicInterface
+func (prsr *RSRParser) ParseDataProviderWithInterfaces2(dP utils.DataProvider) (out interface{}, err error) {
+	if prsr.dynRules != nil {
+		var dynPath string
+		if dynPath, err = prsr.dynRules.ParseDataProvider(dP); err != nil {
+			return
+		}
+		var dynRSR *RSRParser
+		if dynRSR, err = NewRSRParser(prsr.Rules[:prsr.dynIdxStart] + dynPath + prsr.Rules[prsr.dynIdxEnd:]); err != nil {
+			return
+		}
+		return dynRSR.ParseDataProviderWithInterfaces2(dP)
+	}
+	var outIface interface{}
+	if outIface, err = utils.DPDynamicInterface(prsr.path, dP); err != nil {
+		return
+	}
+	return prsr.parseValueInterface(outIface)
+}
+
 // CompileDynRule will return the compiled dynamic rule
 func (prsr *RSRParser) CompileDynRule(dP utils.DataProvider) (p string, err error) {
 	if prsr.dynRules == nil {
diff --git a/engine/attributes.go b/engine/attributes.go
index 843656954..3917505a7 100644
--- a/engine/attributes.go
+++ b/engine/attributes.go
@@ -335,6 +335,8 @@ func ParseAttribute(dp utils.DataProvider, attrType, path string, value config.R
 		out, err = value.ParseValue(utils.EmptyString)
 	case utils.MetaVariable, utils.MetaComposed:
 		out, err = value.ParseDataProvider(dp)
+	case utils.MetaGeneric:
+		out, err = value.ParseDataProviderWithInterfaces2(dp)
 	case utils.MetaUsageDifference:
 		if len(value) != 2 {
 			return "", fmt.Errorf("invalid arguments <%s> to %s",
diff --git a/engine/routes.go b/engine/routes.go
index 481d39b2a..3e70dbc80 100644
--- a/engine/routes.go
+++ b/engine/routes.go
@@ -474,11 +474,16 @@ func (rp *RouteProfile) Set(path []string, val interface{}, newBranch bool, _ st
 			valA, err = utils.IfaceAsStringSlice(val)
 			rp.SortingParameters = append(rp.SortingParameters, valA...)
 		case utils.Sorting:
-			rp.Sorting = utils.IfaceAsString(val)
+			if valStr := utils.IfaceAsString(val); len(valStr) != 0 {
+				rp.Sorting = valStr
+			}
 		case utils.Weights:
 			rp.Weights, err = utils.NewDynamicWeightsFromString(utils.IfaceAsString(val), utils.InfieldSep, utils.ANDSep)
 		}
 	case 2:
+		if val == utils.EmptyString {
+			return
+		}
 		if path[0] != utils.Routes {
 			return utils.ErrWrongPath
 		}
diff --git a/general_tests/routes_cases_it_test.go b/general_tests/routes_cases_it_test.go
index 4a63241bf..dd0b5c70c 100644
--- a/general_tests/routes_cases_it_test.go
+++ b/general_tests/routes_cases_it_test.go
@@ -177,6 +177,7 @@ func testV1RtsCaseGetRoutesAfterLoading(t *testing.T) {
 				Weights: ";35",
 			},
 		},
+		Weights: ";0",
 	}
 	var reply *engine.APIRouteProfile
 	if err := rtsCaseSv1BiRpc.Call(context.Background(), utils.AdminSv1GetRouteProfile,
@@ -223,6 +224,7 @@ func testV1RtsCaseGetRoutesAfterLoading(t *testing.T) {
 				Weights:        ";30",
 			},
 		},
+		Weights: ";0",
 	}
 	if err := rtsCaseSv1BiRpc.Call(context.Background(), utils.AdminSv1GetRouteProfile,
 		&utils.TenantID{ID: "ROUTE_ACNT_1002", Tenant: "cgrates.org"},
@@ -263,6 +265,7 @@ func testV1RtsCaseGetRoutesAfterLoading(t *testing.T) {
 				Weights:   ";20",
 			},
 		},
+		Weights: ";0",
 	}
 	if err := rtsCaseSv1BiRpc.Call(context.Background(), utils.AdminSv1GetRouteProfile,
 		&utils.TenantID{ID: "ROUTE_ACNT_1003", Tenant: "cgrates.org"},
@@ -303,6 +306,7 @@ func testV1RtsCaseGetRoutesAfterLoading(t *testing.T) {
 				Weights:     ";10",
 			},
 		},
+		Weights: ";0",
 	}
 	if err := rtsCaseSv1BiRpc.Call(context.Background(), utils.AdminSv1GetRouteProfile,
 		&utils.TenantID{ID: "ROUTE_ACNT_1004", Tenant: "cgrates.org"},
@@ -339,6 +343,7 @@ func testV1RtsCaseGetRoutesAfterLoading(t *testing.T) {
 				StatIDs: []string{"STATS_VENDOR_2:*distinct#~*req.Usage"},
 			},
 		},
+		Weights: ";0",
 	}
 	if err := rtsCaseSv1BiRpc.Call(context.Background(), utils.AdminSv1GetRouteProfile,
 		&utils.TenantID{ID: "ROUTE_ACNT_1005", Tenant: "cgrates.org"},
@@ -383,6 +388,7 @@ func testV1RtsCaseGetRoutesAfterLoading(t *testing.T) {
 				Weights:        ";10",
 			},
 		},
+		Weights: ";0",
 	}
 	if err := rtsCaseSv1BiRpc.Call(context.Background(), utils.AdminSv1GetRouteProfile,
 		&utils.TenantID{ID: "ROUTE_HC1", Tenant: "cgrates.org"},
diff --git a/general_tests/session_volume_discount_it_test.go b/general_tests/session_volume_discount_it_test.go
index bcd61b643..541317389 100644
--- a/general_tests/session_volume_discount_it_test.go
+++ b/general_tests/session_volume_discount_it_test.go
@@ -400,9 +400,10 @@ func testSessVolDiscProcessCDRCustomer(t *testing.T) {
 
 func testSessVolDiscAccountAfterDebiting(t *testing.T) {
 	expectedAcc := utils.Account{
-		Tenant:    "cgrates.org",
-		ID:        "ACNT_VOL1",
-		FilterIDs: []string{},
+		Tenant:  "cgrates.org",
+		ID:      "ACNT_VOL1",
+		Opts:    make(map[string]interface{}),
+		Weights: utils.DynamicWeights{{}},
 		Balances: map[string]*utils.Balance{
 			"ABS_VOLUME1": {
 				ID: "ABS_VOLUME1",
@@ -412,6 +413,7 @@ func testSessVolDiscAccountAfterDebiting(t *testing.T) {
 						Weight:    30,
 					},
 				},
+				Opts:  make(map[string]interface{}),
 				Type:  "*abstract",
 				Units: utils.SumDecimal(&utils.Decimal{utils.NewDecimal(0, 0).Neg(utils.NewDecimal(1, 0).Big)}, utils.NewDecimal(1, 0)), // this should be -0
 				CostIncrements: []*utils.CostIncrement{
@@ -429,6 +431,7 @@ func testSessVolDiscAccountAfterDebiting(t *testing.T) {
 						Weight:    20,
 					},
 				},
+				Opts:  make(map[string]interface{}),
 				Type:  "*abstract",
 				Units: utils.SumDecimal(&utils.Decimal{utils.NewDecimal(0, 0).Neg(utils.NewDecimal(1, 0).Big)}, utils.NewDecimal(1, 0)),
 				CostIncrements: []*utils.CostIncrement{
@@ -459,7 +462,6 @@ func testSessVolDiscAccountAfterDebiting(t *testing.T) {
 				RateProfileIDs: []string{"RP_SUPPLIER1"},
 			},
 		},
-		ThresholdIDs: []string{},
 	}
 	var result utils.Account
 	if err := tSessVolDiscBiRPC.Call(context.Background(), utils.AdminSv1GetAccount,
diff --git a/loaders/libloader.go b/loaders/libloader.go
index 4a764d920..c2cabb38c 100644
--- a/loaders/libloader.go
+++ b/loaders/libloader.go
@@ -180,6 +180,8 @@ func (ar *record) SetFields(ctx *context.Context, tmpls []*config.FCTemplate, fi
 				err = ar.Compose(fullPath, nMItm)
 			case utils.MetaGroup: // in case of *group type simply append to valSet
 				err = ar.Append(fullPath, nMItm)
+			case utils.MetaGeneric:
+				err = ar.Set(fullPath, out)
 			default:
 				err = ar.SetAsSlice(fullPath, nMItm)
 			}
@@ -293,3 +295,17 @@ func prepareData(prf profile, lData []*utils.OrderedNavigableMap, rsrSep string)
 	}
 	return
 }
+
+// Set implements utils.NMInterface
+func (ar *record) Set(fullPath *utils.FullPath, nm interface{}) (err error) {
+	switch fullPath.PathSlice[0] {
+	default:
+		return ar.data.Set(fullPath, nm)
+	case utils.MetaTmp:
+		_, err = ar.tmp.Set(fullPath.PathSlice[1:], nm)
+		return
+	case utils.MetaUCH:
+		ar.cache.Set(fullPath.Path[5:], nm, nil)
+		return
+	}
+}
diff --git a/utils/dataconverter.go b/utils/dataconverter.go
index de91a2ce8..d80719115 100644
--- a/utils/dataconverter.go
+++ b/utils/dataconverter.go
@@ -49,6 +49,17 @@ func (dcs DataConverters) ConvertString(in string) (out string, err error) {
 	return IfaceAsString(outIface), nil
 }
 
+// ConvertString converts from and to string
+func (dcs DataConverters) ConvertInterface(in interface{}) (out interface{}, err error) {
+	out = in
+	for _, cnv := range dcs {
+		if out, err = cnv.Convert(out); err != nil {
+			return
+		}
+	}
+	return
+}
+
 // DataConverter represents functions which should convert input into output
 type DataConverter interface {
 	Convert(interface{}) (interface{}, error)
@@ -474,6 +485,26 @@ type LengthConverter struct{}
 func (LengthConverter) Convert(in interface{}) (out interface{}, err error) {
 	switch val := in.(type) {
 	case string:
+		if len(val) > 2 {
+			var tmp interface{}
+			var l func() (interface{}, error)
+			switch {
+			case val[0] == '[' && val[len(val)-1] == ']':
+				v := []interface{}{}
+				l = func() (interface{}, error) { return len(v), nil }
+				tmp = &v
+
+			case val[0] == '{' && val[len(val)-1] == '}':
+				v := map[string]interface{}{}
+				l = func() (interface{}, error) { return len(v), nil }
+				tmp = &v
+			}
+			if tmp != nil {
+				if err := json.Unmarshal([]byte(val), tmp); err == nil {
+					return l()
+				}
+			}
+		}
 		return len(val), nil
 	case []string:
 		return len(val), nil
diff --git a/utils/decimal.go b/utils/decimal.go
index 9a2f849e6..a0c3afe4e 100644
--- a/utils/decimal.go
+++ b/utils/decimal.go
@@ -229,11 +229,9 @@ func (d *Decimal) Compare(d2 *Decimal) int {
 
 // NewDecimalFromString converts a string to decimal
 func NewDecimalFromString(value string) (*Decimal, error) {
-	z, ok := decimal.WithContext(DecimalContext).SetString(value)
-	// verify ok and check if the value was converted successfuly
-	// and the big is a valid number
-	if !ok || z.IsNaN(0) {
-		return nil, fmt.Errorf("can't convert <%+v> to decimal", value)
+	z, err := StringAsBig(value)
+	if err != nil {
+		return nil, err
 	}
 	return &Decimal{z}, nil
 }