Render multiple frames

I've been developing a plugin in AfterEffects, where I wanted to render every frame differently.
Earlier, the PF_Cmd_Render was being called just once and it used to apply the same data on every frame. Then I set the PF_OutFlag_WIDE_TIME_INPUT in GlobalSetup, and then all the data was being applied to respective frames as required.
Now I want to create the same plugin for Premiere Pro. I am using the same code as in AfterEffects and getting the same issue that the same data is being applied to all the frames. Is there some other outflag or config that I need to set?

Another thing I wanted to confirm is that in AfterEffects, I used to take a new composition and then a layer inside the composition and then used to apply the effect.
The effect plugin that I developed used to render only on a solid layer. So I would like to know what is similar to a 'Solid Layer' in PremierePro.