[JaKe Elite]

Get a coordinate inside Four Dragons and use /save.
Gather the saved coordinates from your My Documents > GTA SA User Files > SAMP > savedpositions.txt

The next thing that you wanna do is copy paste the x, y, z coordinates and copy paste them on IsPlayerInRangeOfPoint and then check if they are in the range, if they are let /sethp execute otherwise if not then print out a client message to the player that they aren't in Four Dragons casino.

So basically it would've looked like this

PHP код:

CMD:sethp(playerid, params[]) 
{ 
    new Float:bet, string[92]; 
    
    if(!IsPlayerInRangeOfPoint(playerid, Float:range, Float:x, Float:y, Float:z))
        return SCM(playerid, -1, "* You are not inside Four Dragons casino.");
    
    if(sscanf(params, "f", bet)) 
        return SCM(playerid, -1, "USAGE:/sethp (hp)."); 

    format(string, sizeof(string), "Your Hp Has Been Setten To %.2f",bet); 
    SCM(playerid, -1, string); 
    SetPlayerHealth(playerid , bet); 
    return 1; 
} 


Replace the range with the amount of radius do you want the player near in the coords in order to execute the command and replace the X Y Z with the coordinates that you've gathered