Checking users group membership via an acl

[Cirrus]

Hi, 

I know the below code is wrong as gs.getUser() refers to the current logged in user.

if(gs.getUser().isMemberOf('Group X'))&&(current.sys_created_by.isMemberOf('Group X'))){
answer = true;
}

Basically, is there a way of asking the above in a simple statement?

The acl should allow read access if the current logged in user is a member of group x, and they are trying to read a ticket created by another user who is also a member of group x

Thanks 

[SatyakiBose]

Hello @Cirrus 

You might want to check this post - https://www.servicenow.com/community/developer-forum/acl-check-for-group/m-p/1604133

[Community Alums]

Try 

gs.getUser().getUserByID(current.sys_created_by).isMemberOf(<YOUR GROUP HERE>)

PS. The sys_create_by is not a reference field i believe...you will need to get the relevant user by using getUserByName or similar - check the docs for available methods