parallel computing problem

Hallo

I am trying to create a job with 2 tasks, each task would call a function i have created that takes as an input an ip address and accordingly it activates 2 devices attached to my pc through a gigabit ethernet interface and these devices do have the submitted ip addresses. The result from running the code is nothing as if it doesn't call the called method at all.

CODE:

%%Parallel computing

% This script submits a job with 3 tasks 
sched = findResource(); 
job3b = createJob(sched,'FileDependencies',{'Main.m'}); 
createTask(job3b, @Main, 1, '192.168.10.2'); 
createTask(job3b, @Main, 1, '192.168.30.2');

submit(job3b); 
waitForState(job3b, 'finished'); % optional 
sprintf('Finished Running Job'); 
results = getAllOutputArguments(job3b); 
USRP1_output=results(1); 
USRP2_output=results(2);

sprintf('Got Output Arguments'); 
destroy(job3b); % permanently removes job data 
sprintf('Test Completed')

CODE END

Note that the Main.m file works on its own if you run it independently and gives results while the results in this code fragment is an empty matrix (2x0)

sorry for the inconvenience and Thank You in advance

best regards