# Cant access to boolean array bit indirectly

**URL:** <https://forum.inductiveautomation.com/t/cant-access-to-boolean-array-bit-indirectly/69684>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [February 10, 2023, 11:54am UTC](https://forum.inductiveautomation.com/t/cant-access-to-boolean-array-bit-indirectly/69684 "2023-02-10T11:54:16Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![jjguillenes](https://avatars.discourse-cdn.com/v4/letter/j/54ee81/32.png) [@jjguillenes](https://forum.inductiveautomation.com/u/jjguillenes)\
**Post date:** [February 10, 2023, 11:54am UTC](https://forum.inductiveautomation.com/t/cant-access-to-boolean-array-bit-indirectly/69684/1 "2023-02-10T11:54:16Z")

</div>

Hello people, simple question from a noob designer.

Can i access to single values of tag arrays indirectly? im trying with boolean arrays and cant seem to work.  
context : im using single byte from siemens as boolean array to check individual bits values so i just have a single tag for each 8 values. but i have a few o these boolean arrays so im trying to build a chart and show them indirectly via cell update binding. i have more than 50 charts like this but its my first time using array tags, is it posible?

---

<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [February 10, 2023, 12:59pm UTC](https://forum.inductiveautomation.com/t/cant-access-to-boolean-array-bit-indirectly/69684/2 "2023-02-10T12:59:41Z")

</div>

Array tags should only be used when you are going to use the whole array as a single value. If you need individual access, you generally should be making separate tags. The tag is the normally the smallest practical unit that can be _written_. (There are some exceptions with particularly capable OPC servers.)

---

<div class="post-metadata">

**Author:** ![jjguillenes](https://avatars.discourse-cdn.com/v4/letter/j/54ee81/32.png) [@jjguillenes](https://forum.inductiveautomation.com/u/jjguillenes)\
**Post date:** [February 16, 2023, 9:37am UTC](https://forum.inductiveautomation.com/t/cant-access-to-boolean-array-bit-indirectly/69684/3 "2023-02-16T09:37:21Z")

</div>

Seems legit to me. I split the tag into single booleans, thank you