Passing parameters from LabVIEW vi to TestStand

Hallo,
I'm struggling with retrieving the value of a vi OUT Parameter of type ASCII string from the basic_serial_write_and_read.vi (http://zone.ni.com/devzone/cda/epd/p/id/2669)
I've assigned a Local Variable type string and assigned this expression to the vi OUT parameter "read string".
When running the sequence however, the Local Variable value is not updated! (?)
I can see the ASCII string being returned from the UUT on the NI I/O Trace tool.
The basic_serial_write_and_read.vi works OK in LabVIEW.
I'm just getting started but can't figure this out. I'd be appreciative of any hints.
Cheers
Kech
Solved!
Go to Solution.

Attached are the basci_erial_write _and_read.vi and my play.seq TestStand sequence.
When using the ASCII char "@" as string to write value - i get no reply value to the Locals.Local_read Variable, although i see that the UUT replies with a 22 byte long message on the NI I7O Trace tool.
How do i convert the vi - so that the string to write and read string parameter type can be used with hex data i.e. 0x40?
Attachments:
basic_serial_write_and_read.vi ‏23 KB
play.seq ‏9 KB

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