[Emmet_]

A stock function is simply a regular function, like this:

pawn Код:

MyFunction() 
{
}

However, the "stock" keyword suppresses the "symbol is never used" warning when a function isn't used, as opposed to doing "#pragma unused".

---

Cut to the chase, you're using the "if" statement incorrectly, so maybe try this:

pawn Код:

CMD:spawnboat(playerid, params[])
{
    if (!IsPlayerInWater(playerid))
        return SendClientMessage(playerid, COLOR_RED, "You're not in water, therefore a boat will not be spawned!");
    
    if (IsPlayerInAnyVehicle(playerid)) {
        DestroyVehicle(GetPlayerVehicleID(playerid));
    }  
    ShowPlayerDialog(playerid, 19, DIALOG_STYLE_LIST, ""COL_BLUE"Boats:", ""COL_ORANGE"Test\n", "Select", "Cancel");
    return 1;
}