Saving output bus in ADE Explorer

Hello, 

I am using Cadence Virtuoso version 6.1.8-64 bit

I have small issue when I save output bus in ADE Explorer, that is:

I have 8 binary outputs, I send them after simulation to the Measurement > Analog to Digital Converter, then I choose to have them in Unsigned Decimal. The function works perfectly and I enjoy reading a number of outputs in one bus expression.

However, when I send the bus expression back to the ADE Explorer and save it, when I repeat the simulation the bus output are coming individually and kill the concept.

How can I fix it to have always data in one bus reading

Thank you in advance for your help

Regards