Description of problem:
=======================
When referencing dialog information from another dialog, pulling information from a "parent" dialog, child dialogs do not update in the UI however logging shows they are returning the right hash in the $evm.object['values'] hash.

If you create a dialog entry and have two drop-down menus, and create an automate method for the first that lists some option, if you have your second menu/automate method try to utilize the output of the first it will never change from the initial value, despite any refreshes performed on the dialogs.  Note that logs show that we are retrieving the correct values from the first dialog, but anything passed to the 'values' hash of the $evm.object object on the second dialog is ignored entirely.  Examples below.

Version-Release number of selected component (if applicable):
=============================================================
5.9.1.2

How reproducible:
=================
Every time

Steps to Reproduce:
===================
- Create a parent dialog utilizing an automate method like so:

$evm.object['values'] = {'' => 'Empty Set', 1 => 'Burger', 2 => 'Fries', 3 => 'Shake'}

- Then have a dialog rely on the above dialog's selections in another method:

parent_selection = $evm.root.attributes["dialog_dynamic_dialog_parent"]
$evm.log(:info, "DIALOG_DEBUG: child_dialog received #{parent_selection} from parent! #{parent_selection.class}")
menu = {'Burger' => 1, 'Fries' => 2, 'Shake' => 3}
value = {}

case parent_selection
  when menu['Burger'].to_s
    value[1] = 'Black Bean'
  when menu['Fries'].to_s
    value[1] = 'Sweet Potato'
  when menu['Shake'].to_s
    value[1] = 'Vanilla'
  else
    value[1] = 'Nothing selected for parent dialog'
end

$evm.log(:info, "DIALOG_DEBUG: child_dialog is returning values hash of #{value}")
$evm.object['values'] = value

- Observe as the 'child' dialog will never properly update, and forever show the output of "Nothing selected for parent dialog" when attempting to refresh the button.  Note that in the automate logs we do get the updated 

[----] I, [2018-05-21T13:18:42.415183 #2696:378933c]  INFO -- : Updated namespace [TestDialogs/TestDyanamicDialogs/child_dialog  TEST/TestDialogs]
[----] I, [2018-05-21T13:18:42.427181 #2696:378933c]  INFO -- : Invoking [inline] method [/TEST/TestDialogs/TestDyanamicDialogs/child_dialog] with inputs [{}]
[----] I, [2018-05-21T13:18:42.428334 #2696:378933c]  INFO -- : <AEMethod [/TEST/TestDialogs/TestDyanamicDialogs/child_dialog]> Starting 
[----] I, [2018-05-21T13:18:43.047862 #2696:51dbc8]  INFO -- : <AEMethod child_dialog> DIALOG_DEBUG: child_dialog received 1 from parent!
[----] I, [2018-05-21T13:18:43.048743 #2696:51dbc8]  INFO -- : <AEMethod child_dialog> DIALOG_DEBUG: child_dialog is returning values hash of {1=>"Black Bean"}
[----] I, [2018-05-21T13:18:43.081597 #2696:378933c]  INFO -- : <AEMethod [/TEST/TestDialogs/TestDyanamicDialogs/child_dialog]> Ending
[----] I, [2018-05-21T13:18:43.081775 #2696:378933c]  INFO -- : Method exited with rc=MIQ_OK

Despite the above log, observe that no change happens in the UI or via selection, in both the classic UI and the self-service UI.

Actual results:
===============
Child dialog never updates with new information from parent despite refreshing.

Expected results:
=================
Child dialog should update with new options based on option of parent dialog upon refreshing.