MemberSet Property under EVDRE Expansion

Hello Experts,

We are using BPC 7.5 M sp04, I am trying to input hard coded members in MemberSet property under Expansion section of EVDRE template, When I enter a long string it shows the "######################" in MemberSet property.

My question is Is there any length limit for MemberSet property?

Please Advice.

Thanks & Regards,

Rohit