diff --git a/stimBuffApis/livoxGen1/openClCollatingAndMeshingEngine.cpp b/stimBuffApis/livoxGen1/openClCollatingAndMeshingEngine.cpp
index 5bdfabe..486cd08 100644
--- a/stimBuffApis/livoxGen1/openClCollatingAndMeshingEngine.cpp
+++ b/stimBuffApis/livoxGen1/openClCollatingAndMeshingEngine.cpp
@@ -1000,14 +1000,18 @@ public:
 		size_t totalPoints = nSucceeded * pointsPerDgram;
 
 		// Count points with intensity greater than 116
-		float* collationFloats = static_cast<float*>(engine.collationBufferPtr);
 		size_t highIntensityCount = 0;
-		for (size_t i = 0; i < totalPoints; ++i)
+		if (context->intensityStimFrame.has_value())
 		{
-			float intensity = collationFloats[i * 4 + 3];
-			if (intensity > 116.0f)
+			StimulusFrame& intensityFrame = context->intensityStimFrame->get();
+			float* intensityFloats = reinterpret_cast<float*>(intensityFrame.slotDesc.vaddr);
+			for (size_t i = 0; i < totalPoints; ++i)
 			{
-				++highIntensityCount;
+				float intensity = intensityFloats[i];
+				if (intensity > 116.0f)
+				{
+					++highIntensityCount;
+				}
 			}
 		}