Hi, I am trying to write a rewrite rule to replace something like: browser showOn: #xxx; from: #yyy; using: [ browser list ... browser tree ... ] to something like: browser transmit to: #xxx; from: #yyy; andShow: [:a | a list ... a tree ... ] I managed to do the following: RBParseTreeRewriter new replace: '`@browser showOn: `@target; from: `@origin; using: [ ``@.statements ]' with: '`@browser transmit to: `@target; from: `@origin; andShow: [:a | ``@.statements]'; yourself However, the problem here is that I do not know how to replace all the "browser" appearances with "a" inside the andShow: block. I tried multiple variations like the one below, but I could not seem to get it to work as I want. replace: '`@browser showOn: `@target; from: `@origin; using: [ `@browser ``@.statements]' with: '`@browser transmit to: `@target; from: `@origin; andShow: [:a | a ``@.statements]'; Can anyone point me into the right direction? Cheers, Doru -- www.tudorgirba.com "What we can governs what we wish."