Emission over time

[ldotchopz]

The problem i am having is that I can get a colour to change over time using a Custom Properties, Mapping operator and a Ramp. But the mapping Operator ruins all the other sub object materials for the shape

There are 8 sub materials and i simply want only one of them to change colour over time. but there seems to be a trade off, either keep the mapping of all objects or make the colour change work, i cannot get them to work together.

Thoughts?

Thanks