Hi,
Use the 'Unflatten from String' function from the Advcanced >> Data Manipulation palette. For the 'Type' input, you'll need to wire the type of the indicator. The best error-free way to do this is to right-click on your control/indicator (for which the flattened data it is), create a constant, and then wire this constant to the 'type' input.
This should unflatten the data for you. Right-click on the 'Value' output of the above function and create an indicator to see the values.
See attached diagram.
Hope this helps.
Khalid