Lock EA for Demo Account

 
Dear Sir/Madam, 

I just created an EA. 
Before putting into Market, I would like to publish as it can only work with Demo Account
So far I still cannot lock my EA to be only useable with Demo Account.
Can somebody help? 
Many Thanks
 
It's against Market's rules.
Products must not contain deliberate operation restrictions or change their functionality depending on the type of account, account number, name of a trading server and other similar conditions under which they are used.