I haven't tried this, so I'm not sure, but:
Click on the ExecutePackage task and look at its properties.
In particular, look at ForcedExecutionValue and ForceExecutionValue.
If you set ForceExecutionValue to true, the result of the execution will be set to whatever is in ForcedExecutionValue. Try setting it to '1' and see what happens.
If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.