PROB_INSTANCE_NAME=INSTANCE_NAME not working C:UsersHPAppDataLocalGoogleCloud SDK>PROB_INSTANCE_NAME=lamp-1-vm ‘PROB_INSTANCE_NAME’ is not recognized as an internal or external command, operable program or batch file. C:UsersHPAppDataLocalGoogleCloud SDK>set PROB_INSTANCE_NAME=lamp-1-vm C:UsersHPAppDataLocalGoogleCloud SDK>gcloud compute instances stop “$PROB_INSTANCE_NAME” ERROR: (gcloud.compute.instances.stop) HTTPError 400: Invalid value ‘$PROB_INSTANCE_NAME’. Values must match the following regular expression: ‘a-z?’ i am using google gcloud tool on the desktop. trying to install Linux guest environment by