diff --git a/orx-fcurve/src/commonTest/kotlin/TestEFCurve.kt b/orx-fcurve/src/commonTest/kotlin/TestEFCurve.kt
index 732c3397..dac64d1f 100644
--- a/orx-fcurve/src/commonTest/kotlin/TestEFCurve.kt
+++ b/orx-fcurve/src/commonTest/kotlin/TestEFCurve.kt
@@ -43,9 +43,9 @@ class TestEFCurve {
     fun testConstantValue() {
         val text = "10.5"
         val fc = fcurve(efcurve(text))
-        assertEquals(10.5, fc.value(0.0))
-        assertEquals(10.5, fc.value(1.0))
-        assertEquals(10.5, fc.value(-1.0))
+        assertEquals(10.5, fc.value(0.0, null))
+        assertEquals(10.5, fc.value(1.0, null))
+        assertEquals(10.5, fc.value(-1.0, null))
 
         val normalizedSampler = fc.sampler(true)
         assertEquals(10.5, normalizedSampler(0.0))
@@ -56,9 +56,9 @@ class TestEFCurve {
     fun testConstantExpression() {
         val text = "${21.0 / 2.0}"
         val fc = fcurve(efcurve(text))
-        assertEquals(10.5, fc.value(0.0))
-        assertEquals(10.5, fc.value(1.0))
-        assertEquals(10.5, fc.value(-1.0))
+        assertEquals(10.5, fc.value(0.0, null))
+        assertEquals(10.5, fc.value(1.0, null))
+        assertEquals(10.5, fc.value(-1.0, null))
 
         val normalizedSampler = fc.sampler(true)
         assertEquals(10.5, normalizedSampler(0.0))
diff --git a/orx-fcurve/src/commonTest/kotlin/TestFCurve.kt b/orx-fcurve/src/commonTest/kotlin/TestFCurve.kt
index cf20660a..962ec51b 100644
--- a/orx-fcurve/src/commonTest/kotlin/TestFCurve.kt
+++ b/orx-fcurve/src/commonTest/kotlin/TestFCurve.kt
@@ -7,9 +7,9 @@ class TestFCurve {
     fun testConstantExpression() {
         val text = "10.5"
         val fc = fcurve(text)
-        assertEquals(10.5, fc.value(0.0))
-        assertEquals(10.5, fc.value(1.0))
-        assertEquals(10.5, fc.value(-1.0))
+        assertEquals(10.5, fc.value(0.0, null))
+        assertEquals(10.5, fc.value(1.0, null))
+        assertEquals(10.5, fc.value(-1.0, null))
 
         val normalizedSampler = fc.sampler(true)
         assertEquals(10.5, normalizedSampler(0.0))
@@ -22,8 +22,8 @@ class TestFCurve {
         run {
             val text = "H-1 L 5 5"
             val fc = fcurve(text)
-            assertEquals(0.0, fc.value(-1.0))
-            assertEquals(5.0, fc.value(4.0))
+            assertEquals(0.0, fc.value(-1.0, null))
+            assertEquals(5.0, fc.value(4.0, null))
             assertEquals(-1.0, fc.start)
             assertEquals(4.0, fc.end)
             assertEquals(5.0, fc.duration)
@@ -31,8 +31,8 @@ class TestFCurve {
         run {
             val text = "H1 L 5 5"
             val fc = fcurve(text)
-            assertEquals(0.0, fc.value(1.0))
-            assertEquals(5.0, fc.value(6.0))
+            assertEquals(0.0, fc.value(1.0, null))
+            assertEquals(5.0, fc.value(6.0, null))
             assertEquals(1.0, fc.start)
             assertEquals(6.0, fc.end)
             assertEquals(5.0, fc.duration)