diff --git a/.gitignore b/.gitignore
index bbc5b29..79dcc09 100644
--- a/.gitignore
+++ b/.gitignore
@@ -58,5 +58,6 @@ Gemfile.lock
 
 # test
 quick.rb
+config.yaml
 
 .vscode/
\ No newline at end of file
diff --git a/README.md b/README.md
index 7ff9edb..47cd519 100644
--- a/README.md
+++ b/README.md
@@ -387,19 +387,19 @@ get may return nil if no value for requested key in midi cache
 ```ruby
 vm.apply(
   {
-    strip_0: {
+    "strip-0" => {
       mute: true,
       gain: 3.2,
       A1: true
     },
-    bus_3: {
+    "bus-3" => {
       gain: -3.2,
       eq: true
     },
-    button_39: {
+    "button-39" => {
       stateonly: true
     },
-    vban_outstream_3: {
+    "vban-outstream-3" => {
       on: true,
       bit: 24
     }
diff --git a/test/higher/higher_test.rb b/test/higher/higher_test.rb
index da9e2da..573aa7e 100644
--- a/test/higher/higher_test.rb
+++ b/test/higher/higher_test.rb
@@ -10,19 +10,19 @@ class StripTest < Minitest::Test
 end
 
 class BusTest < Minitest::Test
-  [false, true].each do |val|
-    define_method("test_it_sets_and_gets_bus_#{Test.data.phys_out}_mute_#{val}") do
-      Test.vm.bus[Test.data.phys_out].mute = val
-      assert_equal(val, Test.vm.bus[Test.data.phys_out].mute)
+  [-8.2, 3.2].each do |val|
+    define_method("test_it_sets_and_gets_bus_#{Test.data.phys_out}_gain_#{val}") do
+      Test.vm.bus[Test.data.phys_out].gain = val
+      assert_equal(val, Test.vm.bus[Test.data.phys_out].gain)
     end
   end
 end
 
 class VbanTest < Minitest::Test
-  [false, true].each do |val|
-    define_method("test_it_sets_and_gets_vban_#{Test.data.phys_in}_on_#{val}") do
-      Test.vm.vban.instream[0].on = val
-      assert_equal(val, Test.vm.vban.instream[0].on)
+  ["test0", "test1"].each do |val|
+    define_method("test_it_sets_and_gets_vban_#{Test.data.vban_in}_name_#{val}") do
+      Test.vm.vban.instream[Test.data.vban_in].name = val
+      assert_equal(val, Test.vm.vban.instream[Test.data.vban_in].name)
     end
   end
 end
diff --git a/test/lower/lower_test.rb b/test/lower/lower_test.rb
index e69de29..6a8ee29 100644
--- a/test/lower/lower_test.rb
+++ b/test/lower/lower_test.rb
@@ -0,0 +1,15 @@
+require_relative "../minitest_helper"
+
+class SetGetParamTest < Minitest::Test
+  def test_it_sets_and_gets_float_parameter
+    Test.vm.set("Fx.Reverb.On", 1)
+    assert_equal(1, Test.vm.get("Fx.Reverb.On"))
+  end
+end
+
+class SetGetButtonTest < Minitest::Test
+  def test_it_sets_and_gets_macrobutton_parameter
+    Test.vm.set_buttonstatus(0, 3, 1)   # button0, trigger, true
+    assert_equal(1, Test.vm.get_buttonstatus(0, 3))
+  end
+end
diff --git a/test/minitest_helper.rb b/test/minitest_helper.rb
index e0fe448..da08840 100644
--- a/test/minitest_helper.rb
+++ b/test/minitest_helper.rb
@@ -11,9 +11,18 @@ class Test
     @vm
   end
 
-  TestMap = Data.define(:name, :phys_in, :virt_in, :phys_out, :virt_out, :button_lower, :button_higher)
+  TestMap = Data.define(:name, :phys_in, :virt_in, :phys_out, :virt_out, :button_lower, :button_higher, :vban_in, :vban_out)
 
-  @data = TestMap.new(@vm.kind.name, @vm.kind.phys_in - 1, @vm.kind.virt_in - 1, @vm.kind.phys_out - 1, @vm.kind.virt_out - 1, 0, 79)
+  @data = TestMap.new(
+    @vm.kind.name,
+    @vm.kind.phys_in - 1,
+    @vm.kind.virt_in - 1,
+    @vm.kind.phys_out - 1,
+    @vm.kind.virt_out - 1,
+    0, 79,
+    @vm.kind.vban[0] - 1,
+    @vm.kind.vban[1] - 1
+  )
 
   def self.data
     @data