Small piece of Arduino code written

Looking for someone to write a short piece of Arduino code for an art project. Completion date must be before 22nd of April.
I am using Arduino to control the brightness of a Neon sign using PWM.
I want to be able to take a graph of brightness (%) vs time (s) that I will provide, and input the values from the graph into the Arduino so that the brightness of the Neon sign follows the line of the graph. Alternatively, if it’s easier I can just provide a list of values (between 0 and 100) for the brightness- they’re will probably be about 1000 numbers. The brightening / dimming will last about 15 minutes and then needs to loop and start from the beginning.

the most important thing is that the brightness of the Neon corresponds to the graph and dims and brightness smoothly.