How do I update a string in the Operator Interface with a value from TestStand?

The key element is UIMessages.

The Operator Interface will handle the UIMessage Event created by a step in TestStand via the PostUIMessageEx activeX.

Below is a visual that will help with the interaction between Operator Interface (which

will start the TestStand API engine(ex Simple OI)) and TestStand sequence.

(larger image file  -SkyDrive public folder)

LabVIEW(r) and TestStand(r) mentioned above are National Instruments products.