snapshot deletion from a selective cluster.

Hi All,

       Task:- Delete the snapshot of all VM's from a selective cluster (I have 4 clusters, i want to select a cluster ).

       Issue:- I am able to select the cluster and get all VM's information but at the time of snapshot deletion it says that no snapshot are avalible.  I attached the workflow. could you help me in fixing the workflow (missing the logic). Thank you inadvance for the help.