# Dynamic transitions in SFC

**URL:** <https://forum.inductiveautomation.com/t/dynamic-transitions-in-sfc/11438>\
**Category:** Ignition\
**Created:** [March 30, 2016, 7:06pm UTC](https://forum.inductiveautomation.com/t/dynamic-transitions-in-sfc/11438 "2016-03-30T19:06:04Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sjenks](https://avatars.discourse-cdn.com/v4/letter/s/f07891/32.png) [@sjenks](https://forum.inductiveautomation.com/u/sjenks)\
**Post date:** [March 30, 2016, 7:06pm UTC](https://forum.inductiveautomation.com/t/dynamic-transitions-in-sfc/11438/1 "2016-03-30T19:06:04Z")

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Hi,

I am just learning to use the SFC module, and was wondering if there is a way in the transition script to make the values dynamic for both tags and for custom chart parameters.

For example, I want each instance to be passed a High Temp limit. Then during one of the transitions check to see the value for the PV for the furnace I am running a sequence for (this is a dynamic tag reference) is below the passed temp limit.

Thanks for the help.

Scott

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**Author:** ![pphillips](https://avatars.discourse-cdn.com/v4/letter/p/da6949/32.png) [@pphillips](https://forum.inductiveautomation.com/u/pphillips)\
**Post date:** [March 31, 2016, 7:03pm UTC](https://forum.inductiveautomation.com/t/dynamic-transitions-in-sfc/11438/2 "2016-03-31T19:03:57Z")

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Since transitions use the expression functions, you should be able to dynamically assign a tag reference as detailed in the manual at: [https://docs.inductiveautomation.com/display/DOC/tag](https://docs.inductiveautomation.com/display/DOC/tag)

Presumably, you would typically have to pass some parameter to the chart when it was instantiated to allow you to concatenate the name of the tag or the parameter you want to read.

Hope this helps.