# OPC readValue() array item null value return

**URL:** <https://forum.inductiveautomation.com/t/opc-readvalue-array-item-null-value-return/8990>\
**Category:** Ignition\
**Created:** [September 2, 2014, 9:29pm UTC](https://forum.inductiveautomation.com/t/opc-readvalue-array-item-null-value-return/8990 "2014-09-02T21:29:54Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![cdafonseca](https://avatars.discourse-cdn.com/v4/letter/c/c6cbf5/32.png) [@cdafonseca](https://forum.inductiveautomation.com/u/cdafonseca)\
**Post date:** [September 2, 2014, 9:29pm UTC](https://forum.inductiveautomation.com/t/opc-readvalue-array-item-null-value-return/8990/1 "2014-09-02T21:29:54Z")

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Hi All,  
Im trying to read data from OPC conection in a script function. The source data is an array, I am giving the correct item path, but if I run the script it freezes the client for a while and at the end none data is read from the source.  
No error comes out, just no data with unknown quality (return object: [null, Unknown, Tue Sep 02 18:19:54 ART 2014]).  
This does not happen when I try to read a item linked to an tag, for example and OPC tag or and item in an Data Type instance.

Any help please, Thank you

I hope you have understand my issue,

Claudio