Use strLib.setNullTerminator() to convert a variable before passing it to a C or C++ program that expects a null-terminated string as an argument.
strLib.setNullTerminator(target CHAR | DBCHAR | MBCHAR | UNICODE inOut)
target CHAR(25) = "Freddy Ramirez";
strLib.setNullTerminator(target);
// target is now "Freddy Ramirez" followed by 6 nulls