Help adding panner to shader without UV coordinate node?

Hey all, I’m creating a shader that uses the boundingboxbased_0-1_uvw function to create my UV maps on geometry. I’m using that UVW to create a gradient using two colors. I would like to add a panner to the shader so that my gradient “moves/pans” along the y axis. I have gotten a result by using the UV maps imported with my mesh (see image below). However, I’d like to acheive the same effect using the boundingboxbased_0-1_uvw function. Below is an image of my current shader and a video depicting what I would like to do. Can somebody please show me where I can insert the panner into my shader? Thanks!