SAMPFUNCS is a powerful plugin for the CLEO 4 library that significantly expands the scripting and modding capabilities for Grand Theft Auto: San Andreas Multiplayer (SA-MP). While it is widely used by scripters to create complex game features, it is often favored for developing advanced cheats and utility mods. SA-MP 0.3.7-R5 Client Update

SA-MP 037 R5 is an older version of the San Andreas Multiplayer mod. SAMPFUNCS is an essential plugin for this version that extends the scripting capabilities (mainly for the MoonLoader library) and provides powerful cheats/auxiliary functions.

Example 2: Detect Double-Press of 'Y' (CLEO script)

$CLEO .cs
0000:
while true
    wait 0
    if
        0AB0:   key_pressed 89  // Y key
    then
        wait 200 // debounce
        if
            0AB0:   key_pressed 89
        then
            0AF8: sampfuncs_send_client_message "Double Y pressed!"
        end
    end
end

Security Fixes: Addressed a major Remote Code Execution (RCE) vulnerability related to DIALOG_STYLE_LIST and DIALOG_STYLE_TABLIST that allowed malicious server owners to access local files or execute code on a player's computer.

For now: open.mp aims to replicate SAMPFUNC’s functionality natively. But until open.mp reaches full feature parity with 0.3.7 R1-5, thousands of servers depend on SAMPFUNC.
Compatibility: The R5 UPD does not work with open.mp beta clients. You must uninstall it.
Legacy servers: Expect SAMPFUNC 0.3.7 R5 UPD to remain relevant for at least 3-5 more years, as server owners fear breaking their decade-old scripts.

Error 2: SAMPFUNCS shows as "Not Loaded" in-game

Cause: ASI loader conflict or Windows Defender blocking the .ASI file. Fix:

If you encounter errors like "Unable to execute," ensure you are running the client as an administrator through the properties compatibility tab. Do you need help finding the specific 5.4.1 download for SAMPFUNCS or configuring a particular CLEO script for this version? Download client - SA-MP San Andreas Multiplayer

Sampfuncs Samp 037 R5 Upd Better May 2026

Example 2: Detect Double-Press of 'Y' (CLEO script)

$CLEO .cs
0000:
while true
    wait 0
    if
        0AB0:   key_pressed 89  // Y key
    then
        wait 200 // debounce
        if
            0AB0:   key_pressed 89
        then
            0AF8: sampfuncs_send_client_message "Double Y pressed!"
        end
    end
end

For now: open.mp aims to replicate SAMPFUNC’s functionality natively. But until open.mp reaches full feature parity with 0.3.7 R1-5, thousands of servers depend on SAMPFUNC.
Compatibility: The R5 UPD does not work with open.mp beta clients. You must uninstall it.
Legacy servers: Expect SAMPFUNC 0.3.7 R5 UPD to remain relevant for at least 3-5 more years, as server owners fear breaking their decade-old scripts.

Error 2: SAMPFUNCS shows as "Not Loaded" in-game

Cause: ASI loader conflict or Windows Defender blocking the .ASI file. Fix: Security Fixes : Addressed a major Remote Code