Hi,
As a alternate workaround you can
1) Create an alarm in vCenter that will send an email if a snapshot exceeds a certain size.
Go to Home -> Inventory -> Datastores and Datastore Clusters
Alarms tab
View: Defintion
Right Click to create New Alarm
General
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Alarm Name: VM with snapshots
Monitor: Virtual Machines, Monitor for specific conditions
Triggers
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VM Snapshot Size(GB)
Condition: is above
Warning: 10
Alert:20
Trigger if any of the conditions are satisfied
Actions
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Send a notification email
2) Once you receive the email simply click the delete all snapshot from vSphere client and let VMware clean them up.