I cannot seem to find an answer for this

I want each of my rigs to appear as a worker on the Ethereum pool, now the Pool states after your etereum address put .

for for example

-ewal 0xdc01a716e6fdf9d8ddba77971f4d5ffd3bd3c22b.1

when I do this I get an error message and disconnect from pool, so this is not working for me.

How can I distinguish each rig as a separate worker on the pool of which I cannot create workers to begin with