[Luca12]

Hello how can I make to respawn ony free trailers if you know what I mean. Thanks

[offon]

You can use this function:
https://sampwiki.blast.hk/wiki/IsTrailerAttachedToVehicle
in your respawn command.

[Luca12]

how the code should look

[offon]

You can always check the Wiki for the examples.
I will post a code when I will be on my PC.

[Luca12]

anyone? Thanks

[Hansrutger]

Check if it's attached, if not:
https://sampwiki.blast.hk/wiki/SetVehicleToRespawn

Simple if-statement and that ^ inside the brackets. If you want this for a /respawn command it would be enough. If you want to make them respawn every x second, make two timers, one timer checking each second or less, the other being inside the if-statement if the trailer is NOT attached.

No I won't make the code for you.