Multiple Conditions for @MailSend

How do I code multiple conditions in the body field of @MailSend If TypeRequest=“Add Group to Address Book”;“Group Name” + GroupName;

TypeRequest=“Database Move Request”;“Detailed Request” + Description

TypeRequest=“Add Group to Address Book”&TypeRequest=“Database Move Request”;"Group Name "+GroupName+"Detailed Description "+Change_Description;

Subject: Multiple Conditions for @MailSend

msg := @If( TypeRequest=“Add Group to Address Book”;“Group Name” + GroupName;

TypeRequest=“Database Move Request”;“Detailed Request” + Description;

TypeRequest=“Add Group to Address Book”&TypeRequest=“Database Move Request”;"Group Name "+GroupName+"Detailed Description "+Change_Description; [you need an else here];

Then put msg into your @MailSend.