the customer need to change the (VDI)VM ip to new vlan and the new vlan port group already added to FusionCompute .
i guide him to check the below link to modify the IP link :
http://support.huawei.com/hedex/hdx.do?docid=EDOC1000131242&id=it_52_45_000080&text=Modifying%25252520the%25252520VM%25252520IP%25252520Address&lang=en

If not create new port group for the new vlan on FusionCompute .
refer to this link:
http://support.huawei.com/hedex/hdx.do?docid=EDOC1000179329&id=it_58_57_000069&text=Creating%25252520a%25252520Port%25252520Group&lang=en