Add MLO and interiors to FiveM

Add MLO and custom interiors to FiveM server

The MLO (Map Loader Objects) add detailed interiors (comissariats, clubs, stores) to your FiveM server. This guide covers the installation of stream files, folder configuration, ybn/ytyp collisions and troubleshooting of invisible or floating interiors.

Prerequisite

• FiveM server with file access, fiveMpanel
• MLO bought or free (Tebex, GitHub, designers mapping)
• Game build compatible server (indicated by MLO creator)
• Resources bob74_ipl or similar if MLO modifies IPL vanilla

Structure of an MLO resource

resources/[mapping]/mon-mlo/
  fxmanifest.lua
  stream/
    *.ymap
    *.ytyp
    *.ybn
    *.ydr / *.ytd
  client.lua (optionnel, téléport, markers)

fxmanfest.lua type

fx_version 'cerulean'
game 'gta5'
this_is_a_map 'yes'
files { 'stream/*.ytyp' }
data_file 'DLC_ITYP_REQUEST' 'stream/mon_int.ytyp'

Adjust the ytyp name according to the pack. Some MLOs already include a full protest.

Step by step installation

1. Create resource folder

   In resources/[mapping]/, create a folder by MLO (name without spaces).

2. Copy stream files

   All the content stream of the pack in stream/.

3. Add ensure

   In server.cfg : ensure mon-mlo, after the framework, before gameplay scripts.

4. Restart Server

   Complete restart (not just refresh) to load ytyp at boot.

5. Test in play

   Teleport yourself to the coordinates indicated by the creator (/tp admin).

Contact details and teleportation

Most of the OLMs sold include entry coordinates. Integrate them via:

• Script doorlock (ox_doorlock, qb-doorlock) with door coordinates
• Marker + customer event for entry
• IPL + interior if MLO replaces building vanilla

Collisions and ybn

• If the player crosses the ground: missing ybn or wrong placement
• Check that all .ybn are in stream/
• Conflict two MLOs same area: move or remove a pack
• Clear FiveM client cache after big addition mapping

Optimizing performance

• Each streamed MLO consumes customer memory and bandwidth
• Avoid 50+ MLO without testing, load by neighborhood
• Use onesync adapted, OneSync Infinity
• Watch for resmon (resmon 1) for heavy scripts related to the MLO

Troubleshooting

• Invisible interior, ytyp not declared in fxmanifest
• Missing Murds, missing ydr file or wrong stream path
• Crash client on approach, MLO incompatible game build, update artifacts
• Doors do not open, configure doorlock with good hash door

Frequently Asked Questions

MLO vs YMAP simple?
The MLO includes indoor playable with collisions. A single ymap can be exterior decor without interior.

How many MLOs on an RP server?
10-30 MLOs are well chosen enough for a mid-size server. Quality > quantity

Related guides

• Install Resources
• Custom vehicles
• Optimize server

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