Legato sandbox app not able to access file

I am having problem with my legato sandbox application not able to access the files which are placed under /legato/systems/current/appsWriteable/testSW/bin . This is the same location where legato sandbox application resides. If I set the sandbox as false in my adef file, I am able to access the file.

here is my adef file.

sandboxed: true
start: auto
version: 2.0

bundles:
{
file:
{
[x] testSW/bin/
}
}

// Tell the Supervisor to start this program when the application is started.
processes:
{
run:
{
( testSW)
}
}

requires:
{
file:
{
// I need access to /proc for debugging.
“/data/testSW.cert.pem” /bin/
“/data/testSW.private.key” /bin/
“/data/testSW.public.key” /bin/

}

}

Hi,

Can you explain how you are accessing the file in your source code. Can you share the snipped of code.
Can you share the error in logread when you are not able to access the file in sandboxed application.

Regards,
Vasantha