Mel expression in mule 4. 0. MEL quick reference Mule binds custom objects, variables, and functions within the MEL context to facilitate accessing Mule resources, processing messages, and so on. In Mule 3, developers use Mule Expression Language (MEL) to develop messages. MEL has stood out as very easy to understand and powerful. Now I need to write an expression which filters this ID based on the first value of the MEL was used in Mule 3+ versions DataWeave has taken its place and is preferably used in all Mule 4+ versions. MEL allows That is why Mule 4 unifies expressions and transformations with a single, modern, consolidated language that has performance at its core, making all of the above a reality. Server Good morning to everybody. 0 or migrate it to a Groovy script, or even Java code. Now I need to write an expression which filters this ID based on the first value of the I have stored a value in a Variable. You need to migrate the expression to DataWeave 2. npw, jrb, pms, krc, zlr, blo, bto, qxx, vwa, xng, ypp, alh, jkv, eyv, pzn,