COBCH1712 '%1$s' には %3$s個のパラメーターのある可視インスタンスメソッド '%2$s' がない

In the following example, the messsgeEnd method takes two parameters, and not just the argument 4 that has been passed to it.

class-id myClass.
method-id main.
 declare myObj as type myClass
	invoke myObj::messageEnd(4)
end method.
method-id messageEnd (n as float-short s as string).
...
end method.
end class.

This message is produced in contexts when an instance method is required.