# Correct Syntax for using Dynamic Properties to build a tag?

**URL:** <https://forum.inductiveautomation.com/t/correct-syntax-for-using-dynamic-properties-to-build-a-tag/1354>\
**Category:** Archived Topics\
**Created:** [October 28, 2009, 9:13pm UTC](https://forum.inductiveautomation.com/t/correct-syntax-for-using-dynamic-properties-to-build-a-tag/1354 "2009-10-28T21:13:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rthomas](https://avatars.discourse-cdn.com/v4/letter/r/ad7895/32.png) [@rthomas](https://forum.inductiveautomation.com/u/rthomas)\
**Post date:** [October 28, 2009, 9:13pm UTC](https://forum.inductiveautomation.com/t/correct-syntax-for-using-dynamic-properties-to-build-a-tag/1354/1 "2009-10-28T21:13:13Z")

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In the expression editor, I would like to use dynamic properties to build the path and tag name, use the value of that derived tag as input to a function and the result will be used as the “label” .

Can this be done and how ?

my sample is (this gets an error)

concat({[fsql]tag(Root Container.Circle.TagPath)/tag(Root Container.Circle.TagName)}," F")

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<div class="post-metadata">

**Author:** ![nathan](https://avatars.discourse-cdn.com/v4/letter/n/c5a1d2/32.png) [@nathan](https://forum.inductiveautomation.com/u/nathan)\
**Post date:** [October 28, 2009, 11:35pm UTC](https://forum.inductiveautomation.com/t/correct-syntax-for-using-dynamic-properties-to-build-a-tag/1354/2 "2009-10-28T23:35:11Z")

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Try using [Indirect Tag Binding](http://www.inductiveautomation.com/products/factorypmi/usermanual/source/Designer/sqltagsindirecttagbinding.htm).

You will need to use a different dynamic property so that you can append the unit label. That will be a simple expression `{browse_dynamic_property} + '°F'`[This video](http://www.inductiveautomation.com/support/videos/?category=6&video=12) gives an example of using Indirect Tag binding.

It can also be done with an expression. It looks like your brackets and braces may be a little off. If you post your window I’ll give it a shot.