Forcing process flow

I'm using the operator "Create exampleset" to generate an output of a propietary goodness indicator.

This indicator needs a macro ('my macro'),  and this macro depends of a previous exampleset.

The problem, I think, is Rapidminer try to execute the operator Create Exampleset before the macro is generated (evaluated) and it says: "Expression evaluation error. Error evaluating expression: The macro 'my macro' is unknown"

Is there a way to assure the operator "Create exampleset" is not been executed until the macro was calculated? I do not see a way to provide an input to this operator to force a dependency.