'Minecraft javascript error

I am trying to make a script that draws a circle for minecraft using singleplayer commands. For starting, I tried to do the basics; here is my code:

importPackage(Packages.com.sk89q.worldedit.blocks);
importPackage(Packages.com.sk89q.worldedit);

var sess = context.remember();
var playerBlock = player.getBlockOn();
var other = playerBlock.setY(playerBlock.getY + 1);
sess.setBlock(other, new BaseBlock(BlockID.CLOTH, argv[1]));

But when I run it, it says:

Failed to execute: The choice of Java constructor setY matching JavaScript argument types (string) is ambiguous; candidate constructors are: class com.sk89q.worldedit.Vector setY(int) (C:\Users\Darcy\AppData\Roaming.minecraft\craftscripts\circle.js#6) in C:\Users\Darcy\AppData\Roaming.minecraft\craftscripts\circle.js at line nuber 6

Any suggestions?

javaminecraft


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