How to add custom buildings env to my server

[subtle needle]

So how do I add custom env to my samp server as a dff and a txd file or how do I make the dff txd env into a pwn to add into my samp server

[astral blade]

Documentation Search Results: AddSimpleModel

AddSimpleModel: Adds a new custom simple object model for download.
AddSimpleModelTimed: Adds a new custom simple object model for download.
RedirectDownload: Redirect a player custom AddCharModel or AddSimpleModel download to a specific HTTP webpage.

[subtle needle]

when I add a custom skin to my files then start the server it pops up with that then says couldnt connect in red (its to fast to screenshot)