diff --git a/src/webui/service/load_gen/forms.py b/src/webui/service/load_gen/forms.py
index 6e56a4f393061445d68196514b16dbb2c504672e..c8174fcd7efbd4e19f9b7e228a0f76ad76a9c098 100644
--- a/src/webui/service/load_gen/forms.py
+++ b/src/webui/service/load_gen/forms.py
@@ -36,9 +36,9 @@ class LoadGenForm(FlaskForm):
     holding_time = FloatField('Holding Time [seconds]', default=10, validators=[NumberRange(min=0.0)])
     inter_arrival_time = FloatField('Inter Arrival Time [seconds]', default=0, validators=[NumberRange(min=0.0)])
 
-    availability   = FloatField('Availability [%]', default=DEFAULT_AVAILABILITY,   validators=[Regexp(RE_SCALAR_RANGE_LIST)])
-    capacity_gbps  = FloatField('Capacity [Gbps]',  default=DEFAULT_CAPACITY_GBPS,  validators=[Regexp(RE_SCALAR_RANGE_LIST)])
-    e2e_latency_ms = FloatField('E2E Latency [ms]', default=DEFAULT_E2E_LATENCY_MS, validators=[Regexp(RE_SCALAR_RANGE_LIST)])
+    availability   = StringField('Availability [%]', default=DEFAULT_AVAILABILITY,   validators=[Regexp(RE_SCALAR_RANGE_LIST)])
+    capacity_gbps  = StringField('Capacity [Gbps]',  default=DEFAULT_CAPACITY_GBPS,  validators=[Regexp(RE_SCALAR_RANGE_LIST)])
+    e2e_latency_ms = StringField('E2E Latency [ms]', default=DEFAULT_E2E_LATENCY_MS, validators=[Regexp(RE_SCALAR_RANGE_LIST)])
 
     do_teardown = BooleanField('Do Teardown', default=True)
 
diff --git a/src/webui/service/load_gen/routes.py b/src/webui/service/load_gen/routes.py
index 0b863aa8c853023de4a0a5269fbabee7ba4a5f2a..ad4876fe14d7ba927c84ac4a8eac6dd232c099ab 100644
--- a/src/webui/service/load_gen/routes.py
+++ b/src/webui/service/load_gen/routes.py
@@ -17,7 +17,8 @@ from flask import redirect, render_template, Blueprint, flash, url_for
 from common.proto.context_pb2 import Empty
 from common.proto.load_generator_pb2 import Parameters, RequestTypeEnum
 from load_generator.client.LoadGeneratorClient import LoadGeneratorClient
-from load_generator.tools.ListScalarRange import list_scalar_range__to__grpc, parse_list_scalar_range
+from load_generator.tools.ListScalarRange import (
+    list_scalar_range__grpc_to_str, list_scalar_range__list_to_grpc, parse_list_scalar_range)
 from .forms import LoadGenForm
 
 load_gen = Blueprint('load_gen', __name__, url_prefix='/load_gen')
@@ -56,9 +57,9 @@ def home():
     _holding_time       = round(status.parameters.holding_time       , ndigits=4)
     _inter_arrival_time = round(status.parameters.inter_arrival_time , ndigits=4)
 
-    _availability       = str(status.parameters.availability  ).replace(' ', '')
-    _capacity_gbps      = str(status.parameters.capacity_gbps ).replace(' ', '')
-    _e2e_latency_ms     = str(status.parameters.e2e_latency_ms).replace(' ', '')
+    _availability       = list_scalar_range__grpc_to_str(status.parameters.availability  )
+    _capacity_gbps      = list_scalar_range__grpc_to_str(status.parameters.capacity_gbps )
+    _e2e_latency_ms     = list_scalar_range__grpc_to_str(status.parameters.e2e_latency_ms)
 
     form = LoadGenForm()
     set_properties(form.num_requests             , status.parameters.num_requests , readonly=status.running)
@@ -104,9 +105,9 @@ def start():
             load_gen_params.record_to_dlt      = form.record_to_dlt.data
             load_gen_params.dlt_domain_id      = form.dlt_domain_id.data
 
-            list_scalar_range__to__grpc(_availability,   load_gen_params.availability  ) # pylint: disable=no-member
-            list_scalar_range__to__grpc(_capacity_gbps,  load_gen_params.capacity_gbps ) # pylint: disable=no-member
-            list_scalar_range__to__grpc(_e2e_latency_ms, load_gen_params.e2e_latency_ms) # pylint: disable=no-member
+            list_scalar_range__list_to_grpc(_availability,   load_gen_params.availability  ) # pylint: disable=no-member
+            list_scalar_range__list_to_grpc(_capacity_gbps,  load_gen_params.capacity_gbps ) # pylint: disable=no-member
+            list_scalar_range__list_to_grpc(_e2e_latency_ms, load_gen_params.e2e_latency_ms) # pylint: disable=no-member
 
             del load_gen_params.request_types[:] # pylint: disable=no-member
             request_types = list()