Why does Platform Trim not work on Platforms?

@TylarTyger Hello!  It might be helpful if you could take some screenshots of your build so we have a better idea of what's happening. 

In the meantime, when you select the platform trim you want, hover over the floor of the platform and click there to add it; just as if you were placing carpet or tile.  As for the stairs, I've found they can be really tricky.  Make sure you have a full brick of space at the top and bottom of the stairs for sims to enter / exit.  Also, the stairs landing can't be off the lot.  Hope that helps but if it doesn't, let us know. 

Has there been a solution to this? I have the exact same problem :/

Hi there 

I am also having the same issue. I have no mods or cc in my game. To show the issue I built a 3x3 room. I raised it using the foundation tool. Then when I go into platform trims to try and apply it, it doesn’t show up and I get the “nothing to change” error. The same thing happens if I just put a platform down, no trim appears and I get the error message. 

I also downloaded a house from the gallery that was raised and had platform trim around it. When I placed the lot, the trim disappeared and it was the blank grey. 

@toastymissy @Pepperkakor1234   Hello!  There is a difference between foundations and platform trims.  When you build a room and raise the foundation, you are able to add / change the foundation.  When you build a platform, you are also able to raise it like a regular room and give it a foundation.  However, if you want to add a viewable trim, you need to click the middle of the platform to select it and then use the up / down arrows to raise or lower the platform itself.  Once the platform is raised, then you can add a visible platform trim.  I created a short video to demonstrate this and shared it on YouTube here.

https://youtu.be/pJZmKXfzVMI

I hope this helps!

I'm on PS4 and I have this problem. 

I downloaded a bar lot that had curved corners on the deck. I was just going to use the exterior trim to cover it up change the color and the platform trim glitches through. So I delete the corners and start from scratch corner curve platform, match flooring, then I try foundation trim, nope. exterior trim, glitches, delete, redo. Platform trim, successful bloop noise, no change though, click again "no changes needed" I try a different trim same result. Rinse repeat, no change. Now other, on there own platforms do the same. 

@puzzledsomething Hello!  I'm not sure what's going on here.  Would you mind sharing your lot to the gallery?  If you are okay with sharing it, maybe name it something like "Platform Problem" so it's easy to find.

@132701lock     @ Hi! Yes, so the foundation trim is a different option than the platform trim.  At around 1:13 minutes into the video, I selected foundations and then added the Better Than Bricks Foundation to the platform.  Around 1:27 minutes, I selected Platform Trim and then added the Better Than Bricks Platform [trim].

Foundations are located on the bottom left of the build interface.

Platform trims are located in the Walls and Empty rooms section.

Once you select the platform trim you want, you add it by clicking on the platform top or "floor", not the side or "wall" of the platform.  Also, to see the "wall", you'll need to raise the platform by clicking on it and then using the up arrow.

I hope this helps!

i did not see that! thanks so much🙂)