Remove From parent not working

Hello everyone, I’m having a bit of trouble here.
I was following along with UnrealTek’s dynamic Crafting and inventory umg tutorials, and my remove from parent is not working. I did a little debugging, and I think it has to do with the reference, as I could get another interface, the main hud, to disappear, but the inventory UI will not leave the screen. Here are a few pictures of the setup, If you have any ideas, please help. I’m relatively new to ue4 (around four months of experience) but most of this time has been without steady internet access, so I’m relying heavily on youtube tutorials that I can get of the web.

Thanks for the help in advance. great tutorials BlenderTek, keep up the good work.

Here is the initiation script fro the main UI, the one I can get to disappear.

Here is the blueprint that should open and close the child UI, which is not working. I think it has to do with the reference to the Create widget W_InvMain, but I’m not sure.

Finally, here is the blueprint for the add to Inventory, which I don’t think is related to the problem, but I decided to include just in case.

Thanks for the help, and go Unreal!