diff --git a/UnitTests~/ReactiveComponent/ParameterAssignment/ParameterTypeTests.cs b/UnitTests~/ReactiveComponent/ParameterAssignment/ParameterTypeTests.cs
new file mode 100644
index 00000000..ca5a3437
--- /dev/null
+++ b/UnitTests~/ReactiveComponent/ParameterAssignment/ParameterTypeTests.cs
@@ -0,0 +1,75 @@
+using System;
+using System.Linq;
+using modular_avatar_tests;
+using nadena.dev.modular_avatar.core;
+using nadena.dev.modular_avatar.core.editor;
+using NUnit.Framework;
+using UnityEngine;
+using VRC.SDK3.Avatars.Components;
+using VRC.SDK3.Avatars.ScriptableObjects;
+
+namespace UnitTests.ReactiveComponent.ParameterAssignment
+{
+    public class ParameterTypeTests : TestBase
+    {
+        [Test]
+        public void BoolTest()
+        {
+            Test(new[] { 0.0f }, VRCExpressionParameters.ValueType.Bool);
+            Test(new[] { 1.0f }, VRCExpressionParameters.ValueType.Bool);
+
+            Test(new[] { 0.0f, 1.0f }, VRCExpressionParameters.ValueType.Bool);
+            Test(new[] { 1.0f, 0.0f }, VRCExpressionParameters.ValueType.Bool);
+        }
+
+        [Test]
+        public void IntTest()
+        {
+            Test(new[] { 2.0f }, VRCExpressionParameters.ValueType.Int);
+
+            Test(new[] { 0.0f, 1.0f, 2.0f }, VRCExpressionParameters.ValueType.Int);
+            Test(new[] { 2.0f, 1.0f, 0.0f }, VRCExpressionParameters.ValueType.Int);
+
+            Test(new[] { 3.0f, 4.0f, 5.0f }, VRCExpressionParameters.ValueType.Int);
+            Test(new[] { 5.0f, 4.0f, 3.0f }, VRCExpressionParameters.ValueType.Int);
+        }
+
+        [Test]
+        public void FloatTest()
+        {
+            Test(new[] { 0.1f }, VRCExpressionParameters.ValueType.Float);
+
+            Test(new[] { 0.0f, 0.1f, 0.2f }, VRCExpressionParameters.ValueType.Float);
+            Test(new[] { 0.2f, 0.1f, 0.0f }, VRCExpressionParameters.ValueType.Float);
+
+            Test(new[] { 0.3f, 0.4f, 0.5f }, VRCExpressionParameters.ValueType.Float);
+            Test(new[] { 0.5f, 0.4f, 0.3f }, VRCExpressionParameters.ValueType.Float);
+        }
+
+        private void Test(float[] values, VRCExpressionParameters.ValueType expected)
+        {
+            var root = CreateRoot("Root");
+            var descriptor = root.GetComponent<VRCAvatarDescriptor>();
+            descriptor.expressionParameters = ScriptableObject.CreateInstance<VRCExpressionParameters>();
+            descriptor.expressionParameters.parameters = Array.Empty<VRCExpressionParameters.Parameter>();
+
+            for (var i = 0; i < values.Length; i++)
+            {
+                var obj = CreateChild(root, i.ToString());
+                var mami = obj.AddComponent<ModularAvatarMenuItem>();
+                mami.Control = new VRCExpressionsMenu.Control()
+                {
+                    name = obj.name,
+                    type = VRCExpressionsMenu.Control.ControlType.Toggle,
+                    value = values[i],
+                    parameter = new() { name = "Test" },
+                };
+            }
+
+            var context = new nadena.dev.ndmf.BuildContext(root, null);
+            new ParameterAssignerPass().TestExecute(context);
+
+            Assert.AreEqual(expected, descriptor.expressionParameters.parameters.Single().valueType);
+        }
+    }
+}
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diff --git a/UnitTests~/ReactiveComponent/ParameterAssignment/ParameterTypeTests.cs.meta b/UnitTests~/ReactiveComponent/ParameterAssignment/ParameterTypeTests.cs.meta
new file mode 100644
index 00000000..e8b62222
--- /dev/null
+++ b/UnitTests~/ReactiveComponent/ParameterAssignment/ParameterTypeTests.cs.meta
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: c7051ac5a4bbe084c9d34c01c523eda3
+timeCreated: 1726276608
\ No newline at end of file