Someone help me fix this?

[damankin6]

//4280002 - Premium Gold Box (Worth 1,000 4001217)
//4001217 - Heart Mark (Main Trade Exchange)

function start() {
    if (cm.haveItem(4280002) >= 1)
        cm.sendSimple("Wow you found a Premium Gold Box #v4280002#!\r\nWould you like to trade it for 1,000 #v4001217# ?\r\n\r\n#L0##gYes!#k #l\r\n#L1##rNO!#k #l");
}

function action(mode, type, selection) {
cm.dispose();
    if (selection == 0) {
    if (cm.haveItem(4280002, 1))
        cm.gainItem(4280002, -1);
        cm.gainItem(40001217, 1000);
        cm.sendOk("Enjoy your 1,000 #v40001217#");
    cm.dispose();
    }
    if (selection == 1) {
        cm.sendOk("Alright, Come back when you wanna trade!");
    cm.dispose();
    }
} 

Can someone Tell my why MoopleDEV's saying "checkSpace error" and crashing maple?

Well, since its been over 2 hours, while i wait for someone to kindly help me, ill be Toying around with this untill i figure something out..

[MentaL]

[TiredGuy]

var status = 0;

function start() {
    status = -1;
    action(1, 0, 0);
}

function action(mode, type, selection) {
    if (mode == -1) {
        cm.dispose();
    }else if (mode == 0){
        cm.dispose();
        return;        
    } else {
        if (mode == 1)
            status++;
        else
            status--;
        if (status == 0) {
   if (cm.haveItem(4280002, 1)) {
        cm.sendSimple("Wow you found a Premium Gold Box #v4280002#!\r\nWould you like to trade it for 1,000 #v4001217# ?\r\n\r\n#L0##gYes!#k\r\n#L1##rNO!");
    } else {
        cm.sendOk("You dont have a Premium Gold Box");
        cm.dispose();
        }
    } else if (selection == 0) {
        cm.gainItem(4280002, -1);
        cm.gainItem(40001217, 1000);
        cm.sendOk("Enjoy your 1,000 #v40001217#");
        cm.dispose();
    }
    if (selection == 1) {
        cm.sendOk("Alright, Come back when you wanna trade!");
        cm.dispose();    
        }
    }
} 

[Liv3]

function start() {
cm.sendSimple("Wow you found a Premium Gold Box #v4280002#!\r\nWould you like to trade it for 1,000 #v4001217# ?\r\n\r\n#L0##gYes!#k\r\n#L1##rNO!\r\n");
}

function action(mode, type, selection) {
if (selection == 0) {
if (cm.haveItem(4280002, 1)) {
cm.gainItem(4280002, -1);
cm.gainItem(40001217, 1000);
cm.sendOk("Enjoy your 1,000 #v40001217#");
} else
cm.sendOk("Alright, come back when you want to trade!");
}
cm.dispose();
} 

Not tested :D

[TiredGuy]

its suppose to be this i believe o.o

function start() {
cm.sendSimple("Wow you found a Premium Gold Box #v4280002#!\r\nWould you like to trade it for 1,000 #v4001217# ?\r\n\r\n#L0##gYes!#k\r\n#L1##rNO!\r\n");
}

function action(mode, type, selection) {
if (selection == 0) {
if (cm.haveItem(4280002, 1)) {
cm.gainItem(4280002, -1);
cm.gainItem(40001217, 1000);
cm.sendOk("Enjoy your 1,000 #v40001217#");
} else {
cm.sendOk("Alright, come back when you want to trade!");
}
cm.dispose();
}
} 

[Liv3]

its suppose to be this i believe o.o

function start() {
cm.sendSimple("Wow you found a Premium Gold Box #v4280002#!\r\nWould you like to trade it for 1,000 #v4001217# ?\r\n\r\n#L0##gYes!#k\r\n#L1##rNO!\r\n");
}

function action(mode, type, selection) {
if (selection == 0) {
if (cm.haveItem(4280002, 1)) {
cm.gainItem(4280002, -1);
cm.gainItem(40001217, 1000);
cm.sendOk("Enjoy your 1,000 #v40001217#");
} else {
cm.sendOk("Alright, come back when you want to trade!");
}
cm.dispose();
}
} 

If you do } else with a if else statement, you don't require a bracket after else.