Hi, Now with Pharo5 started, I will try to at least do a tiny increment regularly again on Reflectivity (and hopefully larger ones, too). Today: tiny fix: Link condition is working. The idea is that a meta link can have a condition which is compiled into the code. This tiny change makes it work again: testLinkWithCondition | sendNode link condition | condition := false. sendNode := (ReflectivityExamples>>#exampleMethod) ast body statements first value. link := MetaLink new condition: [condition]; metaObject: self; selector: #tagExec. sendNode link: link. self assert: sendNode hasMetalink. self assert: (ReflectivityExamples>>#exampleMethod) class = ReflectiveMethod. self assert: (tag isNil). self assert: (ReflectivityExamples new exampleMethod = 5). self assert: (tag isNil). condition := true. self assert: (ReflectivityExamples new exampleMethod = 5). self assert: (tag = #yes). This is fixed in #50017 (test is green). Next step: when *changing* the condition object (e.g. to true or false or a different block), we need to re-generate code. ==> we need #invalidate on the MetaLink and call it on #condition:. This is the next step for (hopefully) tomorrow. Marcus