New EA should be similiar to original EA copy trade EA with same settings.

I should be able to use this EA on as many different Master account and as many different slave accounts. 

Restriction to be removed where only 1 master account can be used.

so Use either formula that works to support this either insert a magic number (changable for master account and slave account (it can be same for 1 master and slave account so trade get copied only based on same magic number master to slave account).