[Why does this skript not work?]

I modified a skript that someone posted about a year ago on here due to it being obsolete and not working anymore, but now it doesn't work at all and I'm unable to figure out why.

command dupe <int=1>:
    aliases: d
    trigger:
        give (item amount of player's tool * 2 arg-int times) to player

The skript is basically meant to be a /dupe command, like a lot of popular servers, and I try to make it so not only can you /dupe but you can do like /dupe 4 and it'll *2 your item 4 times instead of just *2ing once with /dupe.

[What mods are there?]

Oh wow! That is actually really awesome, thank you.

[What mods are there?]

I've only seen the pixelmon mod, and I'm not sure if there's more, but if there is, that'd be amazing.

[Right click to sell.]

Basically, I made this post to help a friend out, he really needs a skript for his new gen server so he can right click to sell. Any help would be amazingly appreciated, thanks!