It works. Unlike my script, it randomly select a name from the list.Still works. Thanks.
PowerCLI C:\Users\baptisec_pc\Desktop\VDI\PowerCLI Scripts> .\VMMemory3.ps1
VM NumCpuShares CpuSharesLevel NumMemShares MemSharesLevel
-- ------------ -------------- ------------ ----------
W7-VPC_E189 1000 Normal 30720 Normal
W7-VPC_E187 1000 Normal 30720 Normal
W7-VPC_E185 1000 Normal 30720 Normal
W7-VPC_E188 1000 Normal 30720 Normal
W7-VPC_E186 1000 Normal 30720 Normal