I am trying to create a stack using Heat template by using the following command:

heat stack-create vm --template-file=vm_instances.template --parameters="public_network=<management-network-id/name>;net_name=vm1-net;subnet_name=vm1-net;VM1_name=vre1;VM2_name=vre2;v_port0=<name/netid>;vport1=<name/netid of second interface>;v_port2==<name/net of third interface>"

Any help related to this is appreciated. One more thing if I comment out the section vm_name in the heat template the error repeats itself by going to any other parameter for instance, xyz template section is invalid. similarly commenting out that will lead to another section popping up with the same error.