@Swahela Mulla, Thanks for posting in Q&A. Just as Rahul mentioned, you can create a group and add the specific device into this group members.
https://learn.microsoft.com/en-us/mem/intune/fundamentals/groups-add
After that, try the code in previously and add the groupid of the new group you created into the groupid part in the code.
Hope the above information can help.
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