What did I miss?

Code:java

for (int x = 1982; x <= 1985; x++)
{
for (int z = 1750; z <= 1751; z++)
{
Block block = getServer().getWorld(mainWorld).getBlockAt(x, 20, z);
if (block != null && block.getType().equals(Material.POWERED_RAIL))
{
PoweredRail rail = (PoweredRail) block.getState();
rail.setPowered(true);
}
}
}

Logs:
Caused by: java.lang.ClassCastException: org.bukkit.craftbukkit.v1_7_R1.block.CraftBlockState cannot be cast to org.bukkit.material.PoweredRail

So, how can I activate powered rails via plugin and without any redstone?

EDIT: I tried with PoweredRail rail = (PoweredRail) block.getState().getData();
and there are no errors now but rails still doesn't activate...

 

Pr07o7yp3

I don't think you can. You can try manually setting the block to powered rails but as soon as the block receives an update of any kind, it will revert back into its unpowered state