I have just wasted a lot of time by trying to find out the problem with the Connection Editor in Maya when trying to connect the SamplerInfo to the Outer Ramp.

Someone please guide me in the right direction, to help you understand below is my screenshot.

When I try to connect the SamplerInfo to the Ramp using the facingRatio, in the Connection Editor the facingRation just wouldn't appear and I followed Alan's video step by step and not sure what has happened.

Thank you in advance ....

meanwhile moving onto my next project until I figure out the problem with the Blood Vessel