[CSMajor]

pawn Code:

public OnPlayerCommandText(playerid, cmdtext[])
{
if (strcmp("/heal", cmdtext, true, 10) == 0)
{
if(!GetPlayerMoney(playerid) => 500) return SendClientMessage(playerid, COLOR_RACE, "You don't have enough $ to heal.");
GivePlayerMoney(playerid, -500);
SendClientMessage(playerid, COLOR_RACE, "Healed for 500$.");
SetPlayerHealth(playerid, 100);
return 1;
}

return SendClientMesage(playerid, COLOR_ORANGE, "Command does not exist please use /help");
}

Yoan try this ok, it might work.