From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
Without knowing the details on what those functions do, they're likely just arrays. Use the array data type. Look in the LabVIEW documentation at the topic "Using Arrays and Strings in the Call Library Function Node". Also take a look at the "Call DLL" example that ships with LabVIEW (Help->Find Examples..."