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Hello all, I have the following problem. I'm using an external DLL in LabVIEW and one of the functions require a structure as an input parameter. Here's the structure: struct Pippo { DWORD ipAddress; DWORD centerFrequency; Pluto* array }; struct Pluto { DWORD size DWORD address } The function prototype is the following: myfunction( Pippo input ) I've used the Import Library Wizard from LabVIEW and it extract every field from the structures. So what I get as the function inputs is: ipAddress,centerFrequency,size,address. So basically the array is not treated and I get the 1097 error: LabVIEW: An exception occurred within the external code called by a Call Library Function Node. The exception might have corrupted the LabVIEW memory. Save any work to a new location and restart LabVIEW. I've read other threads from this forum and I tried to create the Pluto array of clusters but still the same error. How can I run the function correctly with these parameters? Thanks,