# Undefined Action List Parameters in Nested Async Action Groups

**URL:** https://www.finalbuilder.com/forums/t/undefined-action-list-parameters-in-nested-async-action-groups/3192
**Category:** Bugs
**Created:** [November 30, 2009, 7:43am UTC](https://www.finalbuilder.com/forums/t/undefined-action-list-parameters-in-nested-async-action-groups/3192 "2009-11-30T07:43:00Z")
**Posts on this page:** 3
**Page:** 1

<div class="post-metadata">

### Author: ![deleted\_user](https://www.finalbuilder.com/forums/user_avatar/www.finalbuilder.com/deleted_user/32/937_2.png) [@deleted\_user](https://www.finalbuilder.com/forums/u/deleted_user)
#### Post date: [November 30, 2009, 7:43am UTC](https://www.finalbuilder.com/forums/t/undefined-action-list-parameters-in-nested-async-action-groups/3192/1 "2009-11-30T07:43:00Z")

</div>

This manifests when an Action List Parameter is used in an Async Action Group nested inside another Async Action Group in the same Action List AND&nbsp;no other variable of the same name exists within the project.&nbsp; I've attached an example.

[main] action list:

- Run Action List "X"&nbsp;with parameters "\_Y" set to "hello"

[X] action list with parameter "\_Y":

- Async Group 
  - Async Group 
    - Log Variables "\_Y" #1

  - Log Variables "\_Y" #2

When run Log Variables #1 will fail with \_Y&nbsp;being undefined, while #2 will run fine.

IF&nbsp;a project variable with the name \_Y&nbsp;is defined, #1 will run and use the variable passed to the Action List.

(The included project uses slightly different names and a second project variable for kicks.)

(edited to fix gobbled up \<&nbsp;\>&nbsp;characters, replaced with [] and wrong file)

[test6.fbz6](https://www.finalbuilder.com/forums/uploads/default/original/2X/f/f480452ae5e925034c723358342df8650c9dffa0.fbz6) (1.891 KB)

---

<div class="post-metadata">

### Author: ![Vincent](https://www.finalbuilder.com/forums/user_avatar/www.finalbuilder.com/vincent/32/938_2.png) [@Vincent](https://www.finalbuilder.com/forums/u/Vincent)
#### Post date: [November 30, 2009, 8:33am UTC](https://www.finalbuilder.com/forums/t/undefined-action-list-parameters-in-nested-async-action-groups/3192/2 "2009-11-30T08:33:58Z")

</div>

Hi John   
  
 Thanks for the example, I can see the problem here. I will look into it.

---

<div class="post-metadata">

### Author: ![Vincent](https://www.finalbuilder.com/forums/user_avatar/www.finalbuilder.com/vincent/32/938_2.png) [@Vincent](https://www.finalbuilder.com/forums/u/Vincent)
#### Post date: [December 1, 2009, 1:51am UTC](https://www.finalbuilder.com/forums/t/undefined-action-list-parameters-in-nested-async-action-groups/3192/3 "2009-12-01T01:51:31Z")

</div>

Hi John   
  
 This build includes the fix :   
  
 [https://www.finalbuilder.com/downloads/finalbuilder/630/FB630\_1831.exe](https://www.finalbuilder.com/downloads/finalbuilder/630/FB630_1831.exe)