What is the correct syntax for entering nodes to the wallet console, I keep getting error message "method not found" I'm using the linux wallet, but it does not connect for syncing.

I'm using these nodes:  ( are they even correct, current and active?)


addnode=193.227.134.111:19745
addnode=209.188.18.188:19745
addnode=107.161.156.120:19745
addnode=62.210.5.232:19745
addnode=98.115.147.74:19745
addnode=203.20.114.252:19745
addnode=77.99.98.229:19745


THANKS