[Request] cash or money or bounty code

[Gamemaster20]

ok so i got the money to work but i need it to take away money when u use the menu and u gain money when u kill some one
here are the codes i have

PHP Code:

        level waittill( "connected", player );
        player.bounty = 0; 


PHP Code:

        player thread Cash(); 


PHP Code:

        self thread Cash();
        self thread MonitorBounty(); 


PHP Code:

MonitorBounty()
{
    self endon("death");
    
    for(;;)
    {
        self waittill("player_killed");
        self.bounty += 50;
        wait .1;
    }
} 


PHP Code:

Cash()
{
     self.money_text destroy();
     self.money_num destroy();
     //Money text
     self.money_text = newClientHudElem(self);
     self.money_text.alignX = "left";
     self.money_text.alignY = "bottom";
     self.money_text.horzAlign = "left";
     self.money_text.vertAlign = "bottom";
     self.money_text.alpha = 1;
     self.money_text.x = 5;
     self.money_text.y = -100;
     self.money_text.fontscale = 1.4;
     self.money_text.color = (0,0.6,0);
     self.money_text setText("$ ");
     //Money number
     self.money_num = newClientHudElem(self);
     self.money_num.alignX = "left";
     self.money_num.alignY = "bottom";
     self.money_num.horzAlign = "left";
     self.money_num.vertAlign = "bottom";
     self.money_num.x = 13;
     self.money_num.y = -100;
     self.money_num.alpha = 1;
     self.money_num.fontscale = 1.4;
     self.money_num.color = (0,0.6,0);
     self.money_num setValue(self.bounty);
} 


and when u kill some one it doesnt add the money and idk how to make it so that when u get money u can buy something and if u dont have money it says u dont have enough money or something