public void checkValidStructure (int x, int y, int z, int[] sides)
    {
        int checkLayers = 0;
        //worldObj.setBlock(x,y,z, Blocks.redstone_block);
        //worldObj.setBlock(x+sides[1]-sides[0],y+1,z+sides[3]-sides[2], Blocks.lapis_block);

        tempValidStructure = false;
        // this piece of code here does the complete validity check.
        if (checkSameLevel(x, y, z, sides))
        {
            checkLayers++;
            checkLayers += recurseStructureUp(x, y + 1, z, sides, 0);