set groupAssignee as contributor

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e-no91

In my javascript file I pass the groupAssignee as

workflow.parameters["bpm:groupAssignee"]="GROUP_A";
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In the workflow, I wanted to assign the groupAssignee as a coordinator of the document, so in the workflow I want to add

bpm_package.children[0].setPermission("Coordinator",bpm_groupAssignee);
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but this returns error.
I've replaced bpm_groupAssignee with bpm_groupAssignee.properties["cm:name"], this returns some node,
and replacing with
people.getGroup(bpm_groupAssignee) gives null.

How is the syntax for me to get string "GROUP_A" from the workflow?
Thanks in advance!

EDIT:
using
bpm_groupAssignee.get(0).properties["cm:name"]
also gives error..

My mistake, the resolution I posted below only works in javascript, not in workflow xml.

EDIT SOLVED:
I'm not sure if there is a correct way to do it. but so far I got what I wanted by:

javascript

…
workflow.parameters["bpm:assignTo"]="GROUP_A";
…
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processdefinition.xml

…
bpm_package.children[0].setPermission("Coordinator",bpm_assignTo);
…
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mitpatoliya

You need to use "bpm_groupAssignees" rather than "bpm_groupAssignee"

bpm_groupAssignee is for single user that is the reason it is not able to hold group.