Solved convert blockstate to sign

Hi everyone,
even after spending a lot of time googling,
I still couldn't solve my problem.

I want to check if a sign contains a text when someone rightclicks it.
But it always says it couldn't convert BlockState to Sign.
This is my code:

Code:java

 
if(event.getAction() == Action.RIGHT_CLICK_BLOCK) {
BlockState state = event.getClickedBlock().getState();
                if (state instanceof Sign) {
 
                    Sign sign = (Sign) state;
 
                        if(sign.getLine(1).contains("[HELLO-SIGN]")) {
                            p.sendMessage("Hello.");
                        }
} }

Thanks in advance.

 

You check for line 1 on your sign. Remember, in java, things tend to start with 0. So line 1 would actually be the second line of the sign.

 

Make sure you're casting it to org.bukkit.block.Sign instead of org.bukkit.material.Sign