Error in Invoke Node-Set Control Value

[Alessandro]

I've a trouble with a VI: the error cluster warns ERR(7) when I try to pass the output of the "FLATTEN TO STRING" function to an Invoke Node-Set Control Value.
In the file attachments there's the upmentioned VI. Thank you

[Dennis_Knutson]

Error 7 is file not found. I would think that this error is generated by one of your Open VI References and not any of the Set Control Values. Check your paths and verify that they're correct. Also, you haven't included two subVIs or the VIs that you're trying to modify so it's impossible for anyone to try and recreate your problem. Save them into an LLB and attach that if you still have problems and want some help.