FactoryTalk View Studio Fill Animation

I am trying to set up fill animation on a polygon. How do I determine what color it fills with? I want to have it start as one color and fill as another. Is there a way to do that or would I have to layer another polygon on top of my original color?

I believe fill just fills the object itself, you cannot select the colour.
Could you use the colour animation in conjunction with the fill?

Or do you mean you want a background colour to be blue and then when the object is filled it is white on a blue background (as an example)?

Yes, I want one color to fill over the other. I have accomplished this by layering. I have run into another issue though, I am using a timer's accumulated value for the animation's expression. So the white fills over the blue while the timer is accumualting. When the timer is done, the polygon changes back to blue immediately. I want the blue to fill in over the white. Any suggestions? This is supposed to mimic a conveyor running that has two different colored sections of belt on it.

You can write an expression under the color setting in animation.

If your using one timer for both fill objects then set the min. value of object 1 at 0 and set the min. value of object 2 at half the timer Preset. The Max for object 1 would be half your preset and the Max for object two would be your Preset value.

ex. timer Preset 50000.
object 1- 0 to 24999
object 2- 25000 to 50000