Trying to create DLL from VI to use in TestStand.

[Dennis_Knutson · Accepted solution]

I'm pretty certain that the 'types not recognized by TestStand' is the LVBoolean Type. I don't know if there is any way to get TestStand to automatically load this. In the past, the few times I used a dll with a Boolean, I just added the parameters manually..

[F22-Labrat]

You were correct about the LVboolean. I replaced them with strings and now when i call the DLL from TestStand it automatically recognizes the input/output parameters.  Another type that I found caused this problem was clusters.   Thanks for all the help everyone.

[wellsc]

"the 'types not recognized by TestStand' is the LVBoolean Type", in this case, how to pass the boolean type between the TestStand and this LabVIEW DLL?