diff --git a/src/jvmMain/kotlin/com/sunnychung/application/multiplatform/hellohttp/ux/bigtext/BigMonospaceText.kt b/src/jvmMain/kotlin/com/sunnychung/application/multiplatform/hellohttp/ux/bigtext/BigMonospaceText.kt
index bc50fae8..2ba6644a 100644
--- a/src/jvmMain/kotlin/com/sunnychung/application/multiplatform/hellohttp/ux/bigtext/BigMonospaceText.kt
+++ b/src/jvmMain/kotlin/com/sunnychung/application/multiplatform/hellohttp/ux/bigtext/BigMonospaceText.kt
@@ -465,6 +465,9 @@ private fun CoreBigMonospaceText(
             eventType = eventType,
             changeStartIndex = changeStartIndex,
             changeEndExclusiveIndex = changeEndExclusiveIndex,
+            renderText = transformedText,
+            changeTransformedStartIndex = transformedText.findTransformedPositionByOriginalPosition(changeStartIndex),
+            changeTransformedEndExclusiveIndex = transformedText.findTransformedPositionByOriginalPosition(changeEndExclusiveIndex)
         )
     }
 
diff --git a/src/jvmMain/kotlin/com/sunnychung/application/multiplatform/hellohttp/ux/bigtext/BigTextChangeEvent.kt b/src/jvmMain/kotlin/com/sunnychung/application/multiplatform/hellohttp/ux/bigtext/BigTextChangeEvent.kt
index 5cd2597c..98ca05c2 100644
--- a/src/jvmMain/kotlin/com/sunnychung/application/multiplatform/hellohttp/ux/bigtext/BigTextChangeEvent.kt
+++ b/src/jvmMain/kotlin/com/sunnychung/application/multiplatform/hellohttp/ux/bigtext/BigTextChangeEvent.kt
@@ -12,6 +12,10 @@ data class BigTextChangeEvent(
 
     val changeStartIndex: Int,
     val changeEndExclusiveIndex: Int,
+
+    val renderText: BigText,
+    val changeTransformedStartIndex: Int,
+    val changeTransformedEndExclusiveIndex: Int,
 )
 
 enum class BigTextChangeEventType {