How to pass key values to gp from Java

[Etantonio2016]

Hi,
I am trying to use GP from java,
concerning this I'm calling it with the following arguments:

coming from:

String[] argsUninstall = {"-l" , "-key-enc " + HexBytes.b(key_enc), "-key-mac " + HexBytes.b(key_mac) , "-key-dek " + HexBytes.b(key_dek) };

but the error is:

"Error: Found multiple arguments for option k/key, but you asked for only one"
can you tell me the right way to call it?

Thanks,
Antonio