Curly Bracket Pair {field}

Use this syntax to refer to a buscomp field at the other business component side. For example, if you define the following expression as the source:

{ContactId}

[ContactId] would be evaluated at the destination bsucomp. When {} is involved, please note that {} takes the highest precedence over other operator. Thus, if you have an expression like:

‘{Last Name}' +  'Test'

{Last Name} has precedence over quotes "". If the person's last name is Agee, {Last Name} is evaluated to be "Agee". As a result, the final value is:

"Agee" Test

instead of 

{Last Name} Test