Question How to make shader rotate?

I have followed this tutorial to make a volumetric shader using ray marching:

I am happy with the results so far, however I want to be able to rotate the parent object, however if I rotate the cube the shader is applied to, the perspective doesn't change. I've read in the comments that I need to change from sampling world space to object space, however when I update the graph I don't get the desired effect.

Here is a screenshot of the graph:


And here is the code for the Raymarch node:

Code (CSharp):

1. void Raymarch_float(float3 rayOrigin, float3 rayDirection, float numSteps, float stepSize, float densityScale, UnityTexture3D Volume, float3 Offset, float numLightSteps, float lightStepSize, float3 lightDir, float lightAbsorb, float darknessThreshold, float transmittance, out float3 Out) {
2. float density = 0;
3. float transmission = 0;
4. float lightAccumulation = 0;
5. float finalLight = 0;
6.  
7. for (int i = 0; i < numSteps; i++) {
8.     rayOrigin += (rayDirection * stepSize);
9.  
10.     float3 samplingPos = rayOrigin + Offset;
11.  
12.     float sampledDensity = tex3D(Volume, samplingPos).r;
13.     density += sampledDensity * densityScale;
14.    
15.     float3 lightRayOrigin = samplingPos;
16.    
17.     UNITY_LOOP
18.     for (int j = 0; j < numLightSteps; j++) {
19.         lightRayOrigin += lightDir * lightStepSize;
20.         float lightDensity = tex3D(Volume, lightRayOrigin).r;
21.         lightAccumulation += lightDensity * densityScale;
22.        
23.         float3 shadowboxtest = floor( 0.5 + ( abs( 0.5 - lightRayOrigin ) ) );
24.         float exitshadowbox = shadowboxtest.x + shadowboxtest.y + shadowboxtest.z;
25.  
26.         if(lightAccumulation > 100 || exitshadowbox >= 1) break;
27.     }
28.    
29.     float lightTransmission = exp(-lightAccumulation);
30.     float shadow = darknessThreshold + lightTransmission * (1.0 - darknessThreshold);
31.     finalLight += density * transmittance * shadow;
32.     transmittance *= exp(-density * lightAbsorb);
33.    
34. }
35.  
36. transmission = exp(-density);
37.  
38. Out = float3(finalLight, transmission, transmittance);
39. }

What is the best way to edit the graph and/or code so that when I rotate the cube the shader is assigned to, the "cloud" appears to rotate also?

Thank you