Compiler error C0119

Message: An 'FB_init'-Method of a functionblock or struct needs two inputs 'bInitRetains' and 'bInCopyCode' of type BOOL

Possible error cause: One or both of the inputs 'bInitRetains' and 'bInCopyCode' of type BOOL is missing.

Error correction: Define the missing inputs.

Example of the error:

PROGRAM PLC_PRG
VAR
    inst : FB;
END_VAR


FUNCTION_BLOCK FB	
METHOD FB_init 
VAR_INPUT
END_VAR


--> C0119: An 'FB_init'-Method of a functionblock or struct needs two inputs 'bInitRetains' and 'bInCopyCode' of type BOOL

Error correction:

Example:
METHOD FB_init 
VAR_INPUT
    bInitRetains : BOOL;
    bInCopyCode : BOOL;
END_VAR