Methods are accessed by using the COBOL INVOKE statement. The INVOKE verb is somewhat similar to a COBOL CALL statement, and was implemented as part of the object-oriented extensions to the COBOL language.
The general format of a method invocation is:
INVOKE Control-name "Method-name"
[USING [Parameter-1]... ]
[RETURNING [Return-Value]... ]
Note that method names must be contained in double quotes and each name is case sensitive, meaning it must be spelled exactly as documented in upper and lower case letters.