# Indirect tags in SFC transitions

**URL:** <https://forum.inductiveautomation.com/t/indirect-tags-in-sfc-transitions/17858>\
**Category:** General Discussion\
**Created:** [April 29, 2018, 2:53am UTC](https://forum.inductiveautomation.com/t/indirect-tags-in-sfc-transitions/17858 "2018-04-29T02:53:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jrd](https://avatars.discourse-cdn.com/v4/letter/j/b9bd4f/32.png) [@jrd](https://forum.inductiveautomation.com/u/jrd)\
**Post date:** [April 29, 2018, 2:53am UTC](https://forum.inductiveautomation.com/t/indirect-tags-in-sfc-transitions/17858/1 "2018-04-29T02:53:23Z")

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Hi  
I am having difficulty in using indirect tags in SFC transitions.

I have an SFC with Key Parameter “Tank”, value 1-18.  
I have corresponding Tags : “Tank\_n\_HighLevel”  
What is the correct format for representing these tags indirectly in an SFC transition?

Assistance appreciated.  
JR

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<div class="post-metadata">

**Author:** ![pphillips](https://avatars.discourse-cdn.com/v4/letter/p/da6949/32.png) [@pphillips](https://forum.inductiveautomation.com/u/pphillips)\
**Post date:** [April 30, 2018, 2:46pm UTC](https://forum.inductiveautomation.com/t/indirect-tags-in-sfc-transitions/17858/2 "2018-04-30T14:46:35Z")

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SFC Transitions use the Expression Language, so tag names have to be concatenated, something like:

```auto
tag("[default]Tank_" + {n} + "_HighLevel")

```

Where n is a chart-scoped variable.