help in P and R in IC compiler

derive_pg_connection -power_net {VDD} -ground_net {VSS} -power_pin {VDD} -ground_pin {VSS}Error: Net VDD is not a power net. (MWUI-714)
Error: derive_pg_connection failed

How to make net VDD a power net?换一个

create_net -power VDD

Error是VDD不是power net，那创建VDD作为电源网络就解决问题了，楼上正解

create_net works, thank you folks

got it