[Alex_Valde]

I made it quickly so just try it. Should work perfectly though.

pawn Code:

cmd_healme(playerid, params[])
{
    new pID, pHealth;
    if(!sscanf(params, "ui",pID, pHealth))
    {
        if(IsPlayerConnected(pID))
        {
            if(pHealth > 1 || pHealth < 101)
            {
                SetPlayerHealth(pID, pHealth);
                SendClientMessage(pID, 0x00FF00AA, "You have been healed");
            }
            else return SendClientMessage(playerid, 0xFFFFFFFF,"Error: Please use |Max|: 100, |Min|: 1");
        }
        else return SendClientMessage(playerid, 0xFFFFFFFF,"This player is not online.");
         
    }
    else return SendClientMessage(playerid, 0xFF0000AA, "Usage: \"/healme\"");//if he adds ANYTHING after healme this will come up.
    return 1;
}

Not tested!